Multivariate logistic regression model: determinants associated with do-not-resuscitate (DNR) order implementation
| Odds ratio (95% CI) | p-value | |
| Age years | 1.063 (1.037–1.090) | <0.001 |
| Male versus female | 1.043 (0.638–1.705) | 0.866 |
| BMI kg·m−2 | 0.982 (0.938–1.027) | 0.417 |
| FEV1 % pred | 0.979 (0.966–0.992) | 0.002 |
| DLCO % pred | 0.988 (0.972–1.003) | 0.127 |
| MRCQ score 3–5 versus 1–2 | 1.389 (0.883–2.185) | 0.155 |
| Chronic oxygen dependency? Yes versus no | 3.641 (1.995–6.646) | <0.001 |
| Previous mechanical ventilation? Yes versus no | 3.398 (1.469–7.860) | 0.004 |
Bold type represents statistical significance. BMI: body mass index; FEV1: forced expiratory volume in 1 s; DLCO: diffusing capacity of the lung for carbon monoxide; MRCQ: Medical Research Council Questionnaire.