Table 1.
Baseline Demographic and Anthropometric Features of Participants Included in the Study
| Patient Characteristics | CPAP (n = 1,329) | Usual Care (n = 1,320) | Total (N=2,649) |
|---|---|---|---|
| Sex: female, No. (%) | 250 (18.8) | 254 (19.2) | 504 (19.0) |
| Ethnicity, No. (%) | |||
| Causcasian/European | 326 (24.5) | 332 (25.2) | 658 (24.8) |
| Asian | 851 (64.0) | 831 (63.0) | 1,682 (63.5) |
| Other | 152 (11.4) | 157 (11.9) | 309 (11.7) |
| Country, No. (%) | |||
| Australia | 104 (7.8) | 117 (8.9) | 221 (8.3) |
| Brazil | 139 (10.5) | 140 (10.6) | 279 (10.5) |
| China | 845 (63.6) | 823 (62.3) | 1,668 (63.0) |
| India | 59 (4.4) | 58 (4.4) | 117 (4.4) |
| New Zealand | 53 (4.0) | 45 (3.4) | 98 (3.7) |
| Spain | 128 (9.6) | 134 (10.2) | 262 (9.9) |
| United States | 1 (0.1) | 3 (0.2) | 4 (0.2) |
| Smoking status,a No. (%) | |||
| Never | 580 (43.7) | 595 (45.2) | 1175 (44.5) |
| Past | 536 (40.4) | 528 (40.1) | 1,064 (40.3) |
| Current | 210 (15.8) | 194 (14.7) | 404 (15.3) |
| Age at randomization, median (IQR), y | 61.4 (55.6-67.2) | 61.6 (55.3-67.6) | 61.4 (55.4-67.4) |
| Height, median (IQR), cm | 168 (163-173) | 168 (162-173) | 168 (162-173) |
| Weight, median (IQR), kg | 80 (70-89) | 79 (70-88) | 80 (70-89) |
| BMI, median (IQR), kg/m2 | 28.2 (25.8-31.0) | 28.0 (25.7-30.9) | 28.1 (25.7-30.9) |
| Waist, median (IQR), cm | 100 (93-108) | 100 (93-107) | 100 (93-108) |
| Hip, median (IQR), cm | 105 (100-110) | 105 (100-111) | 105 (100-110) |
| Waist:hip ratio, median (IQR) | 0.96 (0.91-1.00) | 0.95 (0.91-1.00) | 0.95 (0.91-1.00) |
| Neck circumference, median (IQR), cm | 41 (38-43) | 41 (38-43) | 41 (38-43) |
| Systolic BP, median (IQR), mm Hg | 130 (120.5-140) | 130 (120-140) | 130 (120-140) |
| Diastolic BP, median (IQR), mm Hg | 80 (72.5-87) | 80 (71.5-86) | 80 (72-86.5) |
| Heart rate, median (IQR), beats/min | 70 (63-78) | 71 (64-79) | 71 (64-78) |
a
Information missing for six participants (three in each treatment group). IQR = interquartile range.