Methods: In a cross sectional study, we studied patients had OSA with 5 or more Apnea/Hypopnea Index (AHI) who referred to Noor Sleep Clinic , Tehran, Iran. Severity of OSA, and other data were collected from Polysomnography reports and patient`s files. Patients were divided into CVD - and CVD+ groups.
Results: In CVD- group, 76% of patients were male, mean severity of OSA was 36.86 ± 29.54 (AHI), mean age was 44.80 ± 10.10 years, mean BMI was 29.03 ± 4.76 Kg/m2 , percentage of smoker patients was 14.8% and 60.0% of patients had university education. In CVD+ group, 60.8% of patients were male, mean severity of apnea was 49.93±30.22 (AHI), mean age was 56.20±9.55 years, mean BMI was 31.78±5.64 Kg/m2 , percentage of smoker patients was 8.8% and 52.3% of patients had university education. Multi variable analyses showed that, odds ratio for one grade increase in BMI and 1 year increase of age were 1.13 and 1.12 respectively (P_ value < 0.001). In presence of this variables, severity of apnea, gender and education had no significant relation with CVD (P_ value respectively: 0.36, 0.83, 0.79 ).
Conclusions: We concluded that in our study, BMI and aging have the strongest relationship with CVD. So communication health care programmers should consider BMI control and improve diagnostic and treatment equipment for aged patients.