OSA severity in propensity score matched patients with OSA stratified by the presence of cancer diagnosis ≤5 years prior to initiation of CPAP treatment
| No cancer | All-cause cancer | ||
| N=2093 | N=2093 | P value | |
| AHI, events/hour | 30 (19–45) | 32 (20–50) | 0.002 |
| AHI category, events/hour | 0.19 | ||
| AHI <5 | 15 (0.7%) | 14 (0.7%) | |
| AHI 5–14.9 | 272 (13.0%) | 247 (11.8%) | |
| AHI 15–29.9 | 718 (34.3%) | 682 (32.6%) | |
| AHI ≥30 | 1088 (52.0%) | 1150 (54.9%) | |
| ODI, events/hour | 26 (16–41) | 28 (17–46) | <0.001 |
| ODI, quartiles, events/hour | 0.002 | ||
| ODI 0–15.9 | 501 (23.9%) | 433 (20.7%) | |
| ODI 16–27.9 | 587 (28.0%) | 576 (27.5%) | |
| ODI 28–44.9 | 569 (27.2%) | 546 (26.1%) | |
| ODI ≥45 | 436 (20.8%) | 538 (25.7%) |
Matched by anthropometric variables (sex, age, BMI), comorbidities at baseline (ischaemic heart disease, heart failure, diabetes mellitus and obstructive lung disease), socioeconomic factors (civil status and educational level), start year of CPAP treatment and county trichotomised by smoking prevalence. Data are presented as median (IQR) for continuous measures, and n (%) for categorical measures.
AHI, Apnoea-Hypopnoea Index; BMI, body mass index; CPAP, continuous positive airway pressure; ODI, oxygen desaturation index; OSA, obstructive sleep apnoea.