Table 1.
Descriptive categorical variables by AHI category (N = 6,167).
| Total | No OSA* (n = 3,362; 54.5%) | Mild OSA (n = 1,749; 28.4%) | Moderate OSA (n = 703; 11.4%) | Severe OSA (n = 353; 5.7%) | P† | |
|---|---|---|---|---|---|---|
| Snoring | ||||||
| No | 3,147 (87.2) | 1,669 (92.2) | 930 (86.4) | 372 (80.3) | 176 (67.7) | |
| Yes | 464 (12.8) | 142 (7.8) | 147 (13.6) | 91 (19.7) | 84 (32.3) | < .001 |
| Tired | ||||||
| No | 516 (8.4) | 258 (7.7) | 156 (8.9) | 62 (8.8) | 40 (11.4) | |
| Yes | 5,643 (91.6) | 3,099 (92.3) | 1,592 (91.1) | 640 (91.2) | 312 (88.6) | .04 |
| Breathing‡ | ||||||
| No | 2,380 (76.3) | 1,407 (83.8) | 646 (74.6) | 246 (65.3) | 81 (41.3) | |
| Yes | 739 (23.7) | 273 (16.2) | 220 (25.4) | 131 (34.7) | 115 (58.7) | < .001 |
| BP medication | ||||||
| No | 3,717 (60.5) | 2,203 (65.6) | 988 (56.6) | 372 (53.4) | 154 (44.1) | |
| Yes | 2,431 (39.5) | 1,154 (34.4) | 758 (43.4) | 324 (46.6) | 195 (55.9) | < .001 |
| BMI > 35 kg/m2 | ||||||
| No | 5,503 (90.8) | 3,144 (95.2) | 1,516 (88.2) | 575 (83.2) | 268 (77) | |
| Yes | 556 (9.2) | 158 (4.8) | 202 (11.8) | 116 (16.8) | 80 (23) | < .001 |
| Age > 50 y | ||||||
| No | 832 (13.5) | 586 (17.4) | 158 (9) | 58 (8.3) | 30 (8.5) | |
| Yes | 5,334 (86.5) | 2,776 (82.6) | 1,590 (91) | 645 (91.7) | 323 (91.5) | < .001 |
| Large neck§ | ||||||
| No | 5,264 (85.8) | 3,117 (93.1) | 1,422 (81.6) | 509 (73.2) | 216 (61.7) | |
| Yes | 872 (14.2) | 231 (6.9) | 321 (18.4) | 186 (26.8) | 134 (38.3) | < .001 |
| Sex | ||||||
| Male | 2,911 (47.2) | 1,238 (36.8) | 960 (54.9) | 458 (65.1) | 255 (72.2) | |
| Female | 3,256 (52.8) | 2,124 (63.2) | 789 (45.1) | 245 (34.9) | 98 (27.8) | < .001 |
| dSBQ > 3 | ||||||
| No | 2,081 (33.7) | 1,519 (45.2) | 422 (24.1) | 103 (14.7) | 37 (10.5) | |
| Yes | 4,086 (66.3) | 1,843 (54.8) | 1,327 (75.9) | 600 (85.3) | 316 (89.5) | < .001 |
| NHR | ||||||
| < mean | 3,125 (51.8) | 2,174 (66.1) | 675 (39.4) | 207 (30.3) | 69 (20) | |
| ≥ mean | 2,905 (48.2) | 1,115 (33.9) | 1,037 (60.6) | 477 (69.7) | 276 (80) | < .001 |
| WHR | ||||||
| < mean | 3,077 (53.3) | 2,007 (64.5) | 731 (44.1) | 244 (36.6) | 95 (28.2) | |
| ≥ mean | 2,697 (46.7) | 1,106 (35.5) | 926 (55.9) | 423 (63.4) | 242 (71.8) | < .001 |
Values are presented as n (%). *No OSA = AHI < 5 events/h; mild OSA = AHI ≥ 5 events/h to < 15 events/h; moderate OSA = AHI ≥ 15 events/h to < 30 events/h; severe OSA = AHI ≥ 30 events/h. †P value for chi-square tests. ‡Observed stopped breathing. §Neck circumference ≥ 43 cm for men and ≥ 41 cm for women. AHI = apnea-hypopnea index, BMI = body mass index, BP = blood pressure, dSBQ = derived STOP-Bang Questionnaire, NHR = neck circumference/height ratio, OSA = obstructive sleep apnea, WHR = waist circumference/height ratio.