Snoring and Sleep Apnoea as Risk Factors for Type 2 Diabetes Mellitus: A Case Control Study among the Patients attending a Tertiary Care Hospital in North Karnataka
Keywords:Risk Factors, Snoring, Sleep Apnoea, Type 2 Diabetes Mellitus
Background: Type 2 Diabetes Mellitus is a major chronic disease with an alarming rise in the prevalence
which may be largely attributed to the epidemic of obesity. Excess weight which is also an important factor
for Obstructive Sleep Apnoea (OSA), which if persists for long-term results is an unbelievably bad impact
on health. Studies have showed that patients with sleep apnoea had the risk of developing Type 2 Diabetes
Mellitus and there are very few evidences of some improvement in blood glucose level on correction of
Objectives : To know the association of Snoring and Sleep Apnoea with Type 2 Diabetes Mellitus among
the patients attending a tertiary care hospital in North Karnataka.
Methods: A case control study was conducted among 150 patients attending Medicine - Out Patient
Department (OPD) of KIMS, Hubli, from 5th May to 4th June 2012. Among them, those with Type 2 Diabetes
Mellitus were considered as cases and those without Diabetes were taken as controls. A pretested, semistructured questionnaire was applied to collect the data from the study participants with the verbal informed
Results: Out of 107 cases and 43 controls, majority of the cases had the history of snoring (69.2%) and
daytime symptoms suggestive of sleep apnoea such as daytime sleepiness (59.8%), headache (59.8%), dry
mouth (65.4%) and impaired memory (57.9%). Although sleeping duration and Epworth Sleepiness Score
was found to be more among the cases compared to controls, there was no statistically significant association.
Conclusion: This study reports that a greater number of patients who have snoring history and presence of
symptoms suggestive of sleep apnoea were found to be diagnosed with Type 2 Diabetes Mellitus.