Characteristics of study subjects with and without RA, and risk of sleep apnea. Values are number (%) unless otherwise indicated.
| Subjects | p | ||
|---|---|---|---|
| Non-RA, n = 328 | RA, n = 164 | ||
| Female | 236 (72) | 118 (72) | 1.00 |
| Age years, mean ± SD | 64.0 ± 10.5 | 62.9 ± 12.2 | 0.31 |
| Body mass index, kg/m2, mean ± SD | 28.2 ± 5.5 | 28.4 ± 5.5 | 0.62 |
| High blood pressure | 136 (42) | 61 (37) | 0.17 |
| Smoking, current or former | 138 (44) | 76 (46) | 0.64 |
| Diagnosed with obstructive sleep apnea | 31 (9) | 23 (14) | 0.13 |
| Berlin Questionnaire Score | |||
| High risk of sleep apnea | 101 (31) | 82 (50) | < 0.001 |
| Low risk of sleep apnea | 227 (69) | 82 (50) | |
| Berlin Questionnaire Subscales | |||
| Category 1: Snoring | 144 (44) | 80 (48) | 0.31 |
| Category 2: Fatigue | 41 (13) | 63 (38) | < 0.001 |
| Category 3: Comorbidities | 178 (54) | 97 (59) | 0.37 |