Dr Giovanni Cammarota and colleagues from Italy evaluated occupation-related susceptibility of professional singers to experience gastroesophageal reflux.
The team investigated the prevalence of gastroesophageal reflux symptoms in 351 professional opera choristers in comparison with a general population sample.
The team identified the professional opera choristers from well-known choirs in different Italian regions.
The research team also selected a sample of 578 subjects residing in the same areas with a similar distribution in age and sex.
The researchers sent the participants a structured questionnaire.
|The adjusted prevalent rate ratio for a hoarse voice was 2.5|
Reflux symptoms in the year preceding the survey were assessed in both groups.
The researchers also evaluated selected individual characteristics and lifestyle habits.
Prevalence rate ratios, adjusted for sex, age, body mass index, smoking status, alcohol consumption, and other confounding factors, were computed.
The researchers found that opera choristers reported a statistically significant higher prevalence of heartburn, regurgitation, cough, and hoarse voice.
The team noted that the adjusted prevalent rate ratio of heartburn in the opera chorsiters was 1.6.
The adjusted prevalent ratio regurgitation was 1.8, and 1.4 for cough.
The research team observed that the adjusted prevalent rate ratio for a hoarse voice in opera choristers was 2.5.
Regurgitation appeared to be associated consistently with the cumulative lifetime duration of singing activity.
The researchers found that regurgitation was associated with the weekly duration of singing activity when different multivariate models were applied.
Dr Cammarota's team concluded, “Opera choristers reported a higher prevalence of reflux symptoms than the population sample.”
“Future studies will be needed to clarify whether gastroesophageal reflux in professional opera choristers is stress-induced and therefore may be considered as a work-related disease.”