To know prevalence estimates for key symptoms and features that can indicate the presence of obstructive sleep apnea(OSA) in Indian population.
Single centre cross sectional study done from August 2003 to July 2004 in consecutive apparently healthy attendants of 25-64 years age group coming to outdoor of Department of Pulmonary Medicine, King George’s Medical University, Lucknow, India. We recorded data on a pre-designed proforma and took interview on the basis of pre-tested Berlin Questionnaire with some relevant modifications.
Out of 816 subjects approached, 702 responded. Out of 702, 452(64.4%)were males. Mean age was 42.7 ± 10.4 years; mean neck circumference was 13.6 ± 1.2 inch, mean BMI was 23.8 ± 4.2 kg/m2. 31.1%(218/702) were snorers. The loud snorers were17.4%, and 60.5% of them were at high risk for OSA. Among snorers 22.9% bothered other people and 46.0% of them were at high risk for OSA. Out of 702, 6.0% had morning tiredness or sleepy awakening (≥ 3-4 times /wk) and 52.4% of them were at high risk for OSA, 5.1% had wake time tiredness and 61.1% of them were at high risk for OSA. Out of 702, 45.3% either did not know to drive or never needed driving and only 54.7 % used to drive. Among persons who use to drive 2.1% had drowsiness behind the wheel (≥ 3-4 times/wk) and 75% of them were at high risk for OSA. Out of 702, 13.0% were obese and 19.8% of them were at high risk for OSA. Overall there were 3.7% (26/702) were at high risk for OSA(qualified for 2 or more category symptoms of Berlin questionnaire) .
Obstructive sleep apnea is a common disease and there is high demand of its awareness, evaluation, diagnosis and management in countries like India.
There is need of relevant modification of Berlin Questionnaire for countries like India as half of our population either do not know to drive ored not to drive.
Rajendra Prasad, University grant monies Received no grants; Grant monies (from sources other than industry) Nil; Grant monies (from industry related sources) Nil