Table 1.
Demographics of COPD cohort and comparison by risk of OSA symptoms status
| Categories | Subject data values and proportions (%)
|
P-value (with risk of OSA symptoms vs without)
|
||
|---|---|---|---|---|
| COPD cohorta | OSA symptoms risk status
|
|||
|
|
With
|
Without
|
||
| 292 (100) | 86 (29.5) | 206 (70.5) | ||
| Median age (years) | 52.9 | 53.0 | 52.9 | 0.976b |
| 1st–3rd quartile (IQR) | 44.9–66.2 (17.3) | 44.8–62.0 (17.2) | 45.0–62.3 (17.3) | |
| Age group (years) | 0.842c | |||
| 40–45 | 79 (27.1) | 27 (31.4) | 52 (25.2) | |
| 46–50 | 50 (17.1) | 12 (14.0) | 38 (18.4) | |
| 51–55 | 37 (12.7) | 10 (11.6) | 27 (13.1) | |
| 56–60 | 45 (15.4) | 13 (15.1) | 32 (15.5) | |
| 61–65 | 19 (6.5) | 7 (8.1) | 12 (5.8) | |
| 66–70 | 18 (6.2) | 6 (7.0) | 12 (5.8) | |
| ≥71 | 44 (15.1) | 11 (12.8) | 33 (16.0) | |
| Sex | 0.728c | |||
| Male | 234 (80.1) | 70 (81.1) | 164 (79.6) | |
| Female | 58 (19.9) | 16 (18.6) | 42 (20.4) | |
| Ever-smoker | 251 (86.0) | 76 (88.4) | 175 (85.0) | 0.443c |
| Specified occupationsd | 106 (36.3) | 32 (37.2) | 74 (35.9) | 0.835c |
| Body mass index (kg/m2)e | 24.3±4.19 | 26.1±5.82 | 23.5±2.99 | <0.001c |
| Comorbid diseases | ||||
| Hypertensive or cardiovascular | 119 (40.8) | 64 (74.4) | 55 (26.7) | <0.001c |
| Stroke | 3 (1.0) | 2 (2.3) | 1 (0.5) | 0.208c |
| Diabetes mellitus | 37 (12.7) | 20 (23.3) | 17 (8.3) | <0.001c |
| Cancer | 10 (3.4) | 4 (4.7) | 6 (2.9) | 0.457c |
| Tuberculosis | 10 (3.4) | 1 (1.2) | 9 (4.4) | 0.290c |
| None of the above | 154 (52.7) | 19 (22.1) | 135 (65.5) | <0.001c |
Notes:
a
Excluding 112 for whom data to assess risk of OSA symptoms were unavailable.
b
Wilcoxon rank-sum test.
c
Chi-square test.
d
Specified occupations/workplaces: brick or ceramic factory, gravel pit, mine; textiles; building and decorating; chemical raw plant or dye factory; truck driver; baker; fire-fighter; cook with wood, coal, or briquettes.
e
Calculated from self-reported weight and height.
Abbreviations: OSA, obstructive sleep apnea; IQR, interquartile range.