Table 1 Characteristics of study participants (non-obese men) grouped by respiratory disturbance index (RDI)
Sleep disordered breathing | P a | ||
|---|---|---|---|
Cases | Controls | ||
(RDI ≥15) | (RDI <15) | ||
n | 46 | 125 | |
RDI [events/h], mean (SD) | 24.8 (8.8) | 8.4 (3.8) | <0.001 |
Age [years], mean (SD) | 45.4 (7.9) | 36.9 (10.0) | <0.001 |
Body weight [kg], mean (SD) | 75.0 (8.1) | 67.8 (8.5) | <0.001 |
Body mass index [kg/m2], mean (SD) | 25.1 (2.2) | 22.9 (2.5) | <0.001 |
Adult weight gain [kg], mean (SD) | 11.4 (5.8) | 5.2 (6.6) | <0.001 |
Physical activity [MET-h/week], median (25%, 75%) | 12.6 (6.2, 28.6) | 18.1 (8.0, 67.5) | 0.095 |
Overtime hours [h/month], median (25%, 75%) | 13.5 (1, 30) | 20 (10, 40) | 0.19 |
Sleep duration [h/day], mean (SD) | 5.9 (0.9) | 6.2 (0.9) | 0.055 |
Pittsburgh Sleep Quality Index (PSQI) score, mean (SD) | 5.8 (2.3) | 5.3 (2.2) | 0.25 |
Current smoker, n (%) | 16 (35) | 58 (46) | 1.00 |
Regular drinker, n (%) | 37 (80) | 83 (67) | 0.040 |
Marital status (cohabiting after marriage), n (%) | 30 (65) | 60 (48) | 0.058 |
Education (university or higher), n (%) | 34 (74) | 72 (58) | 0.075 |
Work type, n (%) | 0.008 | ||
Specialized or technical | 5 (11) | 28 (23) | |
Managerial | 20 (43) | 24 (20) | |
Clerical | 0 (0) | 5 (4.1) | |
Marketing and sales | 19 (41) | 45 (37) | |
Service | 1 (2.2) | 15 (12) | |
Production or labor services | 1 (2.2) | 2 (1.6) | |
Other | 0 (0) | 4 (3.3) | |
Night shift worker, n (%) | 6 (13) | 43 (35) | 0.007 |
History of hypertension, n (%) | 10 (22) | 11 (9.2) | 0.035 |
History of type 2 diabetes, n (%) | 4 (9.1) | 3 (2.6) | 0.089 |
History of cardiovascular disease, n (%) | 4 (9.1) | 5 (4.2) | 0.25 |