Materiały źródłowe

• #1 Prevalence of Voice Disorders in the United States: A National Survey – PubMed

  https://pubmed.ncbi.nlm.nih.gov/37530584/

  Objectives: The prevalence of voice disorders has not been explored in the context of recent trends in voice use, including voice assistant technology and increased use of teleconferencing for remote work. The objective of this research is (1) to determine the prevalence of voice disorders in the adult population of the United States, and (2) to understand the association of voice disorders with demographic and voice use factors, including vocal demands, and use of teleconferencing and voice assistant technology. […] A total of 1522 responses were included. Of these, 20.6% reported having had a voice disorder at some point in their life. This rate was higher in employed respondents, singers, and teachers (all p 0.0001) and was notably higher in those who used teleconferencing technology and voice assistant technology (both p 0.0001). […] Approximately 1 in 5 Americans surveyed has had a voice disorder. Risk factors for voice disorders include use of teleconferencing technology, voice assistant use, and occupational factors.

• #1 ERIC – EJ1118986 – Epidemiology of Vocal Health in Young Adults Attending College in the United States, Journal of Speech, Language, and Hearing Research, 2016-Oct

  https://eric.ed.gov/?id=EJ1118986

  Epidemiology of Vocal Health in Young Adults Attending College in the United States […] The purpose of this study was to document typical vocal health characteristics (including voice-related activities, behaviors, and symptomatology) of young adults attending college and to determine lifetime and point prevalence rates of voice disorders. […] Lifetime prevalence rate of a voice disorder was 33.9% (point prevalence = 4.45%). […] A total of 46% of students reported some form of voice problem in the past year, most frequently lasting between 1 and 6 days (39%). […] Young adults in college frequently experience disturbances to vocal health; however, this is not usually perceived to interfere with communication.

• #1 Epidemiology of Vocal Health in Young Adults – ProQuest

  https://www.proquest.com/scholarly-journals/epidemiology-vocal-health-young-adults-attending/docview/1848094848/se-2

  Purpose: The purpose of this study was to document typical vocal health characteristics (including voice-related activities, behaviors, and symptomatology) of young adults attending college and to determine lifetime and point prevalence rates of voice disorders. […] Results: Vocal health and associated factors were analyzed for 652 students (predominantly 18-25 years of age). Lifetime prevalence rate of a voice disorder was 33.9% (point prevalence = 4.45%). […] A total of 46% of students reported some form of voice problem in the past year, most frequently lasting between 1 and 6 days (39%). […] Conclusions: Young adults in college frequently experience disturbances to vocal health; however, this is not usually perceived to interfere with communication.

• #1 Spasmodic Dysphonia: Practice Essentials, History of the Procedure, Epidemiology

  https://emedicine.medscape.com/article/864079-overview

  Early textbooks reported that spasmodic dysphonia (SD) was a relatively rare voice disorder, although recent reports suggest that it is not rare but rather frequently goes undiagnosed. Most studies show that this disorder affects females more commonly than males, with a female-to-male ratio as high as 4:1. […] Reports of the mean age of patients with spasmodic dysphonia (SD) typically indicate a range of 39-45 years; however, the condition may occur as early as the second decade of life in rare exceptions and as late as the ninth decade of life. […] Although a genetic basis of spasmodic dysphonia (SD) has not been established, some patients (12%) report relatives with similar voice problems or other dystonias.

• #1

  https://link.springer.com/article/10.1007/s12070-021-02952-8

  The physical, mental, financial, social and emotional constraints encountered by an individual having voice disorder can be easily anticipated as communication is the utmost need in day to day life and some professions. To study the clinical epidemiology of voice disorders in surrounding population and identify the risk factors. […] Amongst 45 patients who formed this study group, male preponderance was seen with male to female ratio of 2.2:1. Laryngeal malignancy (13 cases) was the commonest pathology, followed by vocal polyp (7 cases) and vocal cord palsy (6 cases). Rare cases of tubercular laryngitis and hemorrhage were also diagnosed. […] The largest group of patients belonged to labor/farming occupation suggesting the rural referral to this tertiary care center followed by housewives.

• #1 Dysphonia: Epidemiology, Diagnosis and Risk Factors at Tertiary Health Care Center. | EBSCOhost

  https://search.ebscohost.com/login.aspx?direct=true&profile=ehost&scope=site&authtype=crawler&jrnl=22313796&AN=161656294&h=9q7i0aaqlxU3Aah9X0DFaFnU%2FLunha89bXNnJK1z%2BKTdmjrqHfu58yn5EW%2B7ckUMPdXq%2BfbHKD2McjxLgs1Bxg%3D%3D&crl=c

  The physical, mental, financial, social and emotional constraints encountered by an individual having voice disorder can be easily anticipated as communication is the utmost need in day to day life and some professions. To study the clinical epidemiology of voice disorders in surrounding population and identify the risk factors. This observational, prospective, cross sectional study was conducted in Chirayu medical college and hospital, Bhopal from September 2016 to August 2017. Amongst 45 patients who formed this study group, male preponderance was seen with male to female ratio of 2.2:1. Laryngeal malignancy (13 cases) was the commonest pathology, followed by vocal polyp (7 cases) and vocal cord palsy (6 cases). […] VOICE disorders; TERTIARY care; EPIDEMIOLOGY.

• #1

  https://www.ijmedicine.com/index.php/ijam/article/view/189

  Voice disorders that affect children and adults have different causes with respect to different age groups. […] This study was aimed to analyze the different pathological causes leading to hoarseness of voice in population attending a tertiary care hospital. […] The prevalence was statistically analysed. […] Maximum prevalence of hoarseness was 41%, found in the age group of 50-79 years. […] Among the causes for the hoarseness of voice, vocal nodules were the major. Causes such as vocal cord polyps, laryngeal cancer, chronic laryngitis, were found in a descending order of prevalence.

• #1 Epidemiology of voice disorders among male school teachers in Khamis Mushayt city, Saudi Arabia | International Journal of Medical Science and Public Health

  https://www.bibliomed.org/?mno=30055

  Epidemiology of voice disorders among male school teachers in Khamis Mushayt city, Saudi Arabia. […] Objectives: To assess the magnitude of voice disorders among teachers and to identify the possible risk factors associated with voice disorders. […] Results: Most teachers experienced voice related symptoms during the last year (80.9%). […] More than one third of teachers consulted a physician for their voice-related problems (35%). […] Moderate to serious severity of voice handicap index were reported by 8.2% of the teachers. […] There was an increasing prevalence of moderate to severe grade of voice handicap according to age group (p=0.004). […] Practice of non-healthy habits (e.g., smoking of cigarette, sheesha or moaassal and qat chewing) was associated with significantly higher prevalence of moderate to severe grade of voice handicap.

• #1 Epidemiological study of dysphonia in 4-12 year-old children | Brazilian Journal of Otorhinolaryngology

  https://www.elsevier.es/en-revista-brazilian-journal-otorhinolaryngology-english-edition–497-articulo-epidemiological-study-dysphonia-in-4-12-S1808869415307308

  Children dysphonia studies have reported an incidence of 4.4 to 30.3%. […] Epidemiological studies on pediatric dysphonia are rare in the literature and the difficulties in doing them have been reported by numerous authors, such as the very definition of the word dysphonia. […] The aforementioned reasons justify the highly variable rates of children dysphonia prevalence reported in the literature – between 4% and 30%. […] Dysphonia prevalence indices reported in the literature vary between 4.4% and 30.3% – values which are close to the ones hereby found, between 6% and 7%, calculated based on the report of the parents. […] Parental judgment indicated a dysphonia prevalence rate of 6.15% and the vocal auditory-perceptual analyses pointed to 11.4%; therefore showing a disagreement between both methods of assessment.

• #1 Epidemiological study of dysphonia in 4-12 year-old children | Brazilian Journal of Otorhinolaryngology

  https://www.elsevier.es/en-revista-brazilian-journal-otorhinolaryngology-english-edition–497-articulo-epidemiological-study-dysphonia-in-4-12-S1808869415307308

  The vocal symptoms reported by the parents were associated with phonatory overload, and the predisposing factors were: excessive environmental noise, allergy and nasal obstruction. […] The most frequently diagnosed laryngeal lesions in the videolaryngoscopic exam were: vocal nodules, mucosal thickening and inflammatory processes.

• #1

  https://dokumen.pub/voice-disorders-epidemiology-treatment-approaches-and-long-term-outcomes-9781634844130-1634844130.html

  Voice disorders : epidemiology, treatment approaches and long-term outcomes 9781634844130, 1634844130 […] This book focuses on the epidemiology, treatment and long-term outcomes of voice disorders. The first chapter proposes evidence based therapy for glottal incompetence, which reflects the dysfunction of the vocal folds on voice and swallowing. Chapter Two presents an overview of the epidemiology, diagnosis, management, extraction techniques, adjuvant medical therapy and prevention of laryngeal papillomatosis in children. […] The authors designed a model based on theory and practice that supports therapeutic decisions about cases with glottal incompetence. […] The lack of literature to assist clinical decisions regarding vocal disorders, especially the glottal incompetence, is large. […] The authors will focus on a direct therapy protocol regarding the glottal incompetence. […] The glottal closure dysfunction is a pathological condition characterized by reduced efficient vibration of the vocal fold in a normal aerodynamic support context. […] Dysphonia is common in children. Its main cause is the abuse or misuse of the voice. […] Recurrent respiratory papillomatosis is the most common benign neoplasm of the larynx in children and the second most frequent cause (after vocal cord nodules) of childhood hoarseness. […] This chapter presents an overview of the epidemiology, diagnosis, management, extraction techniques, adjuvant medical therapy and prevention of laryngeal papillomatosis in children. […] The prevalence of this disease has been estimated to be 1.45 to 2.93 per 100,000 children, being higher in low socioeconomic status populations. […] The objective of the thesis was a voice analysis of primary school pedagogues in the Czech region of Ostrava. […] The project was funded through the grant SMO 0211/2012/KZ: Epidemiological study of the frequency of voice disorders in pedagogues and a proposal for its prevention of the University of Ostrava and the Statutory City of Ostrava. […] The results of the study confirm both a decline in voice dynamics and voice deterioration at the end of the school term. […] The study focused on pedagogues or voice professionals at Ostrava primary schools. […] The objective of the thesis was a voice analysis of primary school pedagogues in Ostrava by means of a standardised computer-operated measuring system. […] The voice output of a teacher is strenuous and so places the profession among voice professionals. […] The voice of pedagogues has been the subject of many studies all over the world, as teachers are an attractive statistical population in the field of professional voice disorders. […] The results of many studies indicate that teaching is a high-risk profession leading to voice disorders and that this health issue may be connected to an inability to practise the profession and consequent economical impact. […] The goal of this work was an assessment of voice loading and voice quality evaluation in voice professionals, Ostrava primary school pedagogues. […] By means of DSI evaluation it was statistically confirmed that voice quality deteriorated towards the end of the term. […] The results of the study show that the voice condition of teachers is not at a level their profession requires. […]

• #1 Vocal Health, Singing Voice Treatment

  https://www.froedtert.com/ent/vocal-health

  Offering eastern Wisconsins largest vocal health program, our vocal health team is the go-to choice for expert, reliable and timely relief for voice problems of all kinds. […] Teachers are more than twice as likely as people in other professions to suffer loss of voice or other problems that send them to the doctor. […] Through an evaluation, Vocal Health Program specialists find the root cause of your concern. […] Dysphonia is the medical term for a hoarse voice. When someone is hoarse for more than a couple weeks, it is important to consider a thorough medical evaluation to find the underlying diagnosis or reason for this symptom. […] The Voice Program team is active in national clinical research to improve patient care and outcomes. Research protocols have included studies of voice disorders, laryngopharyngeal reflux issues, dysphagia and airway management. […] Vocal cord cancers require long-term follow-up and surveillance by an experienced voice doctor.

• #1

  https://njcmindia.com/index.php/file/article/view/2574

  Voice disorders cause undesirable effects on school teachers such as reducing their quality of life, decrease in work performance affecting the quality of education, job absenteeism, and reduced social activities as well. […] The overall prevalence of voice disorder among government school teachers was found to be 46.5% with a 95% confidence interval from 41.5% to 51.5%. […] The prevalence of voice disorder was found to be high since teachers are professional voice users.

• #1 (PDF) Epidemiology Of Voice Disorders Among Government School Teachers – An Analytical Cross-Sectional Study from Kancheepuram District

  https://www.academia.edu/119722328/Epidemiology_Of_Voice_Disorders_Among_Government_School_Teachers_An_Analytical_Cross_Sectional_Study_from_Kancheepuram_District

  „Background: Voice disorders cause undesirable effects on school teachers such as reducing their quality of life, decrease in work performance affecting the quality of education, job absenteeism, and reduced social activities as well. […] Results: The overall prevalence of voice disorder among government school teachers was found to be 46.5% with a 95% confidence interval from 41.5% to 51.5%. […] Conclusion: The prevalence of voice disorder was found to be high since teachers are professional voice users. […] The study also recommends that teachers must receive the required health education on the ergonomic risk factors that they will come into contact with in their daily lives as part of their jobs.” […] „Introduction: Among professional voice users teachers are found to be at an exceptionally high risk of developing voice problems because of stress inherent in their occupation and the environmental conditions in which they work.”

• #1

  https://jhrlmc.com/index.php/home/article/view/77

  Voice disorders pose a significant occupational hazard for individuals in voice-demanding professions, notably university professors. […] The study found that 57.7% of participants experienced mild voice disorders, 22.8% moderate, and 19.5% severe, indicating a significant prevalence of voice issues among university professors. […] Voice disorders are notably prevalent among university professors, with significant variations in severity observed between genders.

• #1 Investigation of Voice Disorder Symptoms and their Effects on the Job Performance of Elementary School Teachers

  https://jhsss.sums.ac.ir/index.php/jhsss/article/view/article_46330.html

  Teachers are prone to Voice Disorder (VD). The present study aims to investigate the onset of VD symptoms and their effects on the job performance of the elementary school teachers. […] In the present study, the prevalence of VD was higher among female teachers (41%) compared to male ones (20%). That is to say, the prevalence of the VD symptoms in female teachers was more than twice that of the male teachers. […] Thus, it is recommended that safety, occupational health, and ergonomic programs should be designed for teachers at the Ministry of Education in collaboration with concerned specialists. Periodic examinations, identification of teachers with disorders, culturalization, and education are among the themes of these programs.

• #1 Voice disorders in teachers and the International Classification of Functioning, Disability and Health (ICF)

  https://www.redalyc.org/journal/6732/673271066004/html/

  As shown, the factors of teaching work described impact all components of functioning and lead to the incapacity of the teacher to work. The use of the ICF may contribute to systematize and quantify, in a standardized way, the loss of functioning and work capacity resulting from voice disorders, in addition to assisting in the development of public health promotion policies and in the prevention of vocal disorders in teachers. […] In turn, teachers have the highest prevalence of vocal disorders, which are a functional disease, among professionals who use their voices at work. In Brazil, these disorders are the second main cause of absence from teaching, following psychic disorders. […] According to the International Labor Organization (ILO), teachers are the working category at greatest risk of contracting work-related voice diseases. Therefore, the ILO recommends that these issues related to teachers are addressed as privileged object of research in the Worker Health field.

• #1 Voice disorders in teachers and the International Classification of Functioning, Disability and Health (ICF)

  https://www.redalyc.org/journal/6732/673271066004/html/

  Voice disorders in teachers and the International Classification of Functioning, Disability and Health (ICF) […] Voice disorders in teachers and the International Classification of Functioning, Disability and Health (ICF) […] Contemporary occupational diseases are increasingly expressed by function disorders, which include voice disorders, forcing workers to request a leave of absence from work and leading to an incapacity to perform their work activities. Teachers have the higher prevalence of vocal disorders among the professionals who use their voices professionally, which is reported as the second cause of teaching work absences in Brazil. […] The presence of dust and noise were the most prevalent environment aspects. In turn, the high demand for work and the lack of autonomy to perform the work were identified as factors related to the organization of the work of the teaching work, as well as stress at work and the presence of situations of violence at school as the most reported work absences.

• #1 Voice disorders in teachers and the International Classification of Functioning, Disability and Health (ICF)

  https://www.redalyc.org/journal/6732/673271066004/html/

  The WRVD Protocol provides a great advance for the discussion, since it incorporates not only the biological and individual aspects as risk factors for a voice disorder, but also environmental and organizational factors at work as key determinants of this disease. […] The International Classification of Functioning, Disability and Health (ICF) is the methodology proposed by the World Health Organization (WHO) to measure functional health and disability in individuals and in the population. […] The environmental and organizational factors of the teaching work associated with voice disorders were investigated through a bibliographic review of publications in the Brazilian literature. The presence of dust and noise were the most prevalent environmental factors in the bibliographic review, while the high demand for work and the lack of autonomy to perform the work, as well as stress at work and the presence of situations of violence at school, were the most reported factors among those related to the organization of the teaching work.

• #1 SciELO Brazil – Factors associated with voice disorders among the elderly: a systematic review Factors associated with voice disorders among the elderly: a systematic review

  https://www.scielo.br/j/bjorl/a/chCgjHX5tpdPjdVrVRmy3cd/?lang=en

  During the aging process, natural modifications occur in the larynx and the structures involved in phonation which explain the specific characteristics found in the voices of elderly persons. […] Nevertheless, there appears to be little clarity about which factors are associated with voice disorders in this population, especially from an epidemiological perspective. […] According to the two studies selected for this review, factors associated with voice disorders among the elderly included both physical and psychosocial aspects. […] Further prevalence studies and investigations of factors associated with voice disorders in the elderly from an epidemiological perspective, and which involve different cultures, should be carried out. […] The prevalence of VDs among the elderly is estimated to range from 4.8% to 29.1% and has a great biological and psychosocial impact, which can lead to disadvantages in communicative efficiency and have a negative impact on quality of life, compromising mechanisms of socialization, the maintenance of autonomy and the sense of well-being.

• #1 Factors associated with voice disorders among the elderly: a systematic review | Brazilian Journal of Otorhinolaryngology

  https://www.bjorl.org/en-factors-associated-with-voice-disorders-articulo-S1808869417302094

  The literature describes how the voices of elderly persons can be affected by the physical, psychic and life history of individuals, as well as bad habits and constitutional, racial, hereditary, alimentary, social and environmental factors. […] The two studies exclusively evaluated elderly persons and described distribution based on age and gender. […] The associated factors investigated by the authors in the articles differed. […] In the study conducted in the USA, the factors associated with voice disorders were found to be related to clinical and psychological conditions, such as colds, sore throats, gastroesophageal reflux, arthritis, thyroid problems, bronchitis, sleep disorders and anxiety or frustration. […] In the Korean study, the associated factors were related to place of residence, Body Mass Index (BMI), self-reported general health status, asthma, chronic obstructive pulmonary disease (COPD), thyroid disease, vocal fold disease, cerebrovascular disease and depression.

• #1 Acute Laryngitis: Practice Essentials, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/864671-overview

  Epidemiology […] The exact prevalence of acute laryngitis is not reported because many patients often use conservative measures to treat their inflammation rather than seek medical consultation. Symptoms of an upper respiratory tract infection often accompany the disease; thus, patients are accustomed to managing their own treatment. Nevertheless, laryngitis is one of the most common laryngeal pathologies. […] A study by Bhattacharyya suggested that annually about 1% of children in the United States are affected by voice or swallowing problems, with laryngitis being a common diagnosis in these cases. Using the 2012 National Health Interview Survey, the study found that an estimated 839,000 children in the United States (1.4%) reported a voice problem in the 12 months preceding the survey, with 53.5% of these youngsters having been given a diagnosis for it, the most prevalent being laryngitis (16.6%) and allergies (10.4%). […] A retrospective study by Roy et al indicated that among elderly members of the US population (those over age 65 years) who saw a primary care physician or otolaryngologist, acute and chronic laryngitis were among the most frequent laryngeal/voice disorder diagnoses, along with nonspecific dysphonia and benign vocal fold lesions. The study, which was based on information from a national administrative database, also found that among the elderly, women had greater odds of developing acute laryngitis than did men. […] A study by Benninger et al found that between 2008 and 2012, an increase in dysphonia diagnoses in the US population (from 1.3% to 1.7%) was accompanied by an associated rise in acute laryngitis diagnoses. […] A study by Tanislav and Kostev indicated that in Germany, there was a significant decrease in cases of acute laryngitis during the coronavirus disease 2019 (COVID-19) pandemic. The diagnoses of acute laryngitis by general practitioners were 64% lower between April 2020 and March 2021 than they were during the same period between 2019 and 2020. Among non-COVID respiratory tract infections, only influenza diagnoses saw a greater drop (71%). The investigators suggested that measures used to prevent the spread of COVID-19, such as mask wearing, social distancing, and attention to hand hygiene, may have also impacted the transmission of these other infections.

• #1 Voice Disorders: Etiology and Diagnosis

  https://repositorio.unesp.br/entities/publication/c615ee20-6ba4-4aae-8567-8541dd034395

  Objectives Voice disorders affect adults and children and have different causes in different age groups. […] The aim of the study is to present the etiology and diagnosis dysphonia in a large population of patients with this voice disorder.for dysphonia of a large population of dysphonic patients. […] Results Of the 2019 patients with dysphonia who were included in this study, 786 were male (38.93%) and 1233 were female (61.07). […] Conclusions In this population of 2019 patients with dysphonia, adults and women were predominant. Dysphonia had different etiologies in the age groups studied. Nodules and cysts were predominant in children, functional dysphonia and reflux in adults, and presbyphonia and Reinke’s edema in the elderly.

• #1 Evaluation of Voice Disorders in Patients with Active Laryngeal Tuberculosis | PLOS One

  https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0126876

  Laryngeal tuberculosis (LTB) is the most frequent larynx granulomatous disease. […] The lesions observed in LTB, such as ulceration and fibrosis, can interfere in the process of voice production. […] The main symptom is dysphonia present in almost 90% of cases. […] We found 95.8% cases of dysphonia. […] Voice disorders found in active laryngeal tuberculosis are similar to those reported after clinical healing of the disease, suggesting that sequelae and vocal adjustments may install during the active phase of the disease, negatively impacting the process of vocal quality reestablishment. […] The vocal fold was the most involved anatomical site and dysphonia the most frequent symptom, consistent with other studies. […] All the patients with lesions in the vocal folds reported dysphonia.

• #1 Evaluation of Voice Disorders in Patients with Active Laryngeal Tuberculosis | PLOS One

  https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0126876

  We did not find in the literature a single report on voice disorder assessment in LTB patients with active lesions. […] Considering that voice disorders were still present in more than 80% treated LTB cases, we can assume that this alteration begins during the active phase of the disease and is perpetuated due to the LTB lesion scarring process or by functional adjustment mechanisms developed during the phase of voice functional limitation. […] Voice disorders found in active laryngeal tuberculosis are similar to that reported in the literature after clinical healing of the disease, suggesting that sequelae and vocal adjustments may install during the active phase of the disease negatively impacting voice quality restoring process.

• #1 P1-209 Teaching factors associated to voice disorders: a case-control study | Journal of Epidemiology & Community Health

  https://jech.bmj.com/content/65/Suppl_1/A124.2

  Teachers constitute professional category with high occurrence of voice disorders due to this occupation’s intense vocal demand and to unfavourable work environments. […] Low and moderate ability to work show high correlation with the presence of voice disorder. The presence of voice disorder may jeopardise their careers because these professionals depend essentially on their voices to teach.

• #1 (PDF) Epidemiology Of Voice Disorders Among Government School Teachers – An Analytical Cross-Sectional Study from Kancheepuram District

  https://www.academia.edu/97205165/Epidemiology_Of_Voice_Disorders_Among_Government_School_Teachers_An_Analytical_Cross_Sectional_Study_from_Kancheepuram_District

  Voice disorders were very common in our study of primary school teachers. […] The prevalence of current dysphonia among teachers ranges between 8.7% and 36.6%. […] The economic cost of the education and health system due to dysphonia among teachers is heavy. […] Several studies have shown a high prevalence of voice disorders among teachers. […] This study aims to discuss the need for a standard definition of functional voice disorder and possible implications of the lack of such a standard definition on estimating the prevalence of functional voice disorders among teachers. […] The prevalence of reporting a current voice problem was significantly greater in teachers compared with nonteachers (11.0% vs. 6.2%). […] Teachers were also significantly more likely than nonteachers to have consulted a physician or speech-language pathologist regarding a voice disorder (14.3% vs. 5.5%). […] These results support the notion that teaching is a high-risk occupation for voice disorders.

• #1

  https://medrech.com/index.php/medrech/article/view/694

  Vocal disorders are challenging medical conditions to research nationally. […] No specialized national database or agency is in place to gather information on patients with voice problems. […] Large-scale epidemiologic studies that examine the prevalence, contributing causes, and available treatments for voice disorders are therefore uncommon. […] This study was done to evaluate the prevalence, diagnosis, and management of voice disorders in a single center study. […] According to the current study, a significant proportion of VC patients’ diagnostic and treatment programs nationwide are in accordance with established guidelines.

• #1 (PDF) Epidemiology Of Voice Disorders Among Government School Teachers – An Analytical Cross-Sectional Study from Kancheepuram District

  https://www.academia.edu/119722328/Epidemiology_Of_Voice_Disorders_Among_Government_School_Teachers_An_Analytical_Cross_Sectional_Study_from_Kancheepuram_District

  „Voice disorders pose a significant occupational hazard for individuals in voice-demanding professions, notably university professors.” […] „Voice disorders are very prevalent among teachers and consequences are serious.” […] „Voice disorders restrict daily activity and impact the quality of life.” […] „Voice problems is specified to be one of the major occupational risks of teachers actually the teachers frequently use their voice with high-intensity in noisy environment for a long time and without voice rest.” […] „Several studies have shown a high prevalence of voice disorders among teachers.” […] „This study aims to discuss the need for a standard definition of functional voice disorder and possible implications of the lack of such a standard definition on estimating the prevalence of functional voice disorders among teachers.”

• #1 SciELO Brazil – Factors associated with voice disorders among the elderly: a systematic review Factors associated with voice disorders among the elderly: a systematic review

  https://www.scielo.br/j/bjorl/a/chCgjHX5tpdPjdVrVRmy3cd/?lang=en

  Despite this, there seems to be little clarity about what factors are associated with VDs in this population, especially from an epidemiological perspective, which can guarantee the representativeness of a given population. […] According to the two studies selected for this review, the factors associated with VDs among the elderly included both physical and psychosocial aspects. […] This systematic review revealed that factors associated with voice disorders in the elderly included both physical and psychosocial symptoms, although only two studies were found for specific populations, which had differing cultural habits. The methodological discrepancies between the studies, particularly in relation to sample selection and the instruments used imply great variability and compromise the reliability of the results found. It is important to carry out prevalence studies in different cultures investigating the factors associated with voice disorders in the elderly from an epidemiological perspective.

• #1 Factors associated with voice disorders among the elderly: a systematic review | Brazilian Journal of Otorhinolaryngology

  https://www.bjorl.org/en-factors-associated-with-voice-disorders-articulo-S1808869417302094

  According to the two studies selected for this review, the factors associated with VDs among the elderly included both physical and psychosocial aspects. […] This systematic review revealed that factors associated with voice disorders in the elderly included both physical and psychosocial symptoms, although only two studies were found for specific populations, which had differing cultural habits. […] It is important to carry out prevalence studies in different cultures investigating the factors associated with voice disorders in the elderly from an epidemiological perspective.

• #1 Voice disorders in teachers and the International Classification of Functioning, Disability and Health (ICF)

  https://www.redalyc.org/journal/6732/673271066004/html/

  When analyzing these factors according to the theoretical framework of the International Classification of Functioning, Disability and Health (ICF), it was concluded that they impact all components of functioning and contribute to the teacher’s work disability. Therefore, the ICF may contribute to systematize and quantify, in a standardized manner, the loss of functioning and work ability as a result of voice disorder, as well as helping the preparation of public policies that recognize voice disorders as a work-related disease.

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