Characteristics of subjects with PSIs
| Cardiopulmonary | Other | p† | |
| N | 91 | 26 | |
| Gender, female/male | 49/42 | 10/16 | 0.19 |
| Age (years)‡ | 49 (28) | 58 (20) | <0.01* |
| Body mass index (kg/m2)‡ | 26.9 (9.5) | 25.0 (7.8) | 0.3 |
| Current or ex-smokers/never-smokers | 32/55 | 11/12 | 0.2 |
| Pulmonary function | |||
| TLCOc % predicted‡ | 76.5 (30.5) | 55.9 (55.8) | 0.02* |
| FEV1 % predicted‡ | 86.1 (24.7) | 68.8 (39.5) | <0.01* |
| FVC % predicted‡ | 94.4 (23.3) | 87.5 (38.1) | 0.02* |
| FEV1/FVC‡ | 75 (19) | 71 (31) | 0.4 |
| Resting SaO2‡ | 96 (3) | 97 (2) | 0.3 |
| Resting PaO2‡, kPa | 10.9 (2.5) | 11.9 (2.7) | 0.3 |
| Resting PaCO2‡, kPa | 5.0 (0.9) | 5.0 (0.9) | 0.6 |
Not all subjects/incidents had all values available.
*p<0.05.
†Mann-Whitney U test for continuous variables, and χ2 or Fisher’s exact as appropriate for categorical variables.
‡Reported numbers are median (IQR).
PSI, patient safety incident; TLCOc, transfer factor for carbon monoxide when corrected for haemoglobin.