Table 1 The base line characteristics of patients of Obstructive sleep apnea with and without valid contact

Sex:

 Male

60 (80%)

49 (82%)

0.83

 Female

15 (20%)

11 (18%)

Age (mean) ± SD years

52.9 ± 12.1

50.23 ± 14.0

0.41

BMI

35.89 ± 10.75

36.4 ± 8.23

0.86

Collar size (cm)

35.9 ± 14.4

35.1 ± 11.7

0.9

ESS

15.8 ± 5.6

15.2 ± 8.4

0.87

 Smoking status:

 Current smoker

16 (21%)

18 (30%)

 Ex-smoker

19 (25%)

16 (27%)

0.42

 Non smoker

40 (54%)

26 (43%)

Associated comorbidities

Hypertension

42 (57%)

21 (35%)

0.01

Diabetes

21 (28%)

18 (30%)

0.85

Ischemic heart disease

20 (27%)

14 (23%)

0.69

Dyslipidemia

10 (14%)

13 (21%)

0.25

COPD

08 (11%)

10 (16%)

0.32

History of nasal surgery

11 (15%)

08 (13%)

0.99