TABLE 3.
A Cox regression analysis shows that Charlson Comorbidity Index (CCI) score, diabetes and ventilation therapy predict significantly the difference in mortality rates between obesity hypoventilation and obstructive sleep apnoea patients
| β | se | Wald test | df | p-value | eβ (95% CI) | |
| CCI score | 0.350 | 0.083 | 17.806 | 1 | <0.001 | 1.419 (1.206–1.670) |
| Asthma | 0.238 | 0.361 | 0.435 | 1 | 0.509 | 1.269 (0.625–2.574) |
| COPD | −0.187 | 0.406 | 0.212 | 1 | 0.645 | 0.829 (0.374–1.837) |
| Hypertension | 0.135 | 0.448 | 0.091 | 1 | 0.763 | 1.145 (0.475–2.757) |
| Ischaemic heart disease | 0.044 | 0.394 | 0.012 | 1 | 0.912 | 1.045 (0.482–2.262) |
| Diabetes | 0.820 | 0.408 | 4.044 | 1 | 0.044 | 2.269 (1.021–5.044) |
| Hypercholesterolaemia | −0.274 | 0.461 | 0.354 | 1 | 0.552 | 0.760 (0.308–1.877) |
| Metabolic syndrome | 0.015 | 0.494 | 0.001 | 1 | 0.975 | 1.015 (0.386–2.674) |
| Atrial fibrillation | 0.419 | 0.390 | 1.152 | 1 | 0.283 | 1.520 (0.708–3.264) |
| Psychiatric history | −0.322 | 0.377 | 0.730 | 1 | 0.393 | 0.724 (0.346–1.517) |
| Stroke | 0.447 | 0.844 | 0.281 | 1 | 0.596 | 1.564 (0.299–8.186) |
| Age | 0.016 | 0.018 | 0.819 | 1 | 0.365 | 1.016 (0.981–1.053) |
| Sex | −0.523 | 0.346 | 2.279 | 1 | 0.131 | 0.593 (0.301–1.169) |
| Body mass index | 0.044 | 0.023 | 3.731 | 1 | 0.053 | 1.045 (0.999–1.093) |
| Ventilation therapy | 2584 | 0.443 | 33.947 | 1 | <0.001 | 13.246 (5.554–31.589) |
df: degrees of freedom.