Table 1.
Demographic information.
| Demographic Variables | All Patients (n = 1,963) | Subgroup 1 | Subgroup 2 | Subgroup 3 | Subgroup 4 | Subgroup 5 | P∼ |
|---|---|---|---|---|---|---|---|
| AHI < 15 events/h (n = 42) | 15 ≥ AHI < 30 events/h (n = 765) | 30 ≥ AHI ≤ 50 events/h (n = 821) | 50 > AHI ≤ 65 events/h (n = 258) | AHI > 65 events/h (n = 77) | |||
| Age (years) | n = 1,957; 60.2 ± 10.7 | n = 42; 59.6 ± 10.8 | n = 763; 60.3 ± 10.7 | n = 817; 60.2 ± 10.7 | n = 258; 60.1 ± 11.2 | n = 77; 59.0 ± 10.8 | .89* |
| Body mass index (kg/m2) | n = 1,918; 29.2 ± 3.8 | n = 41; 28.4 ± 3.5 | n = 748; 28.9 ± 3.9 | n = 796; 29.1 ± 3.6 | n = 257; 29.8 ± 4.2 | n = 76; 30.6 ± 3.6 | < .0001* |
| Sex, male | 1,423 (72.8%) | 27 (64.3%) | 527 (69.2%) | 613 (75.0%) | 194 (75.5%) | 62 (81.6%) | .01** |
| Race∞ | |||||||
| White | 1,860 (94.0%) | 39 (90.7%) | 722 (93.4%) | 785 (95.0%) | 244 (94.6%) | 70 (88.6%) | .47** |
| Black | 36 (1.8%) | 1 (2.3%) | 15 (1.9%) | 11 (1.3%) | 6 (2.3%) | 3 (3.8%) | |
| Asian | 15 (0.76%) | 1 (2.3%) | 6 (0.8%) | 6 (0.7%) | 2 (0.8%) | 0 (0.0%) | |
| American Indian or Alaska Native | 5 (0.25%) | 0 (0.0%) | 3 (0.39%) | 2 (0.24%) | 0 (0%) | 0 (0%) | |
| Other | 40 (2.0%) | 1 (2.3%) | 17 (2.2%) | 14 (1.7%) | 4 (1.6%) | 4 (5.1%) | |
| Unknown | 23 (1.2%) | 1 (2.3%) | 10 (1.3%) | 8 (0.97%) | 2 (0.78%) | 2 (2.5%) |
Data are presented as mean ± SD, median (minimum, maximum) or count (%). *ANOVA (analysis of variance); **chi-square test. ∼P values compare 5 subgroups: ∞Chi-square compared White vs non-White patients; some patients selected multiple races, which is why the cumulative number is higher than the total amount of patients. AHI = apnea-hypopnea index, SD = standard deviation.