Predictive factors of length of duration of hospitalisation
| Variable in the model | Coefficient | ||
| Fine I–II# | Fine III, IV and V¶ | Fine I–V+ | |
| Constant | 8.8 | 18.3 | 18.4 |
| Albumin mg·dL−1 | −1.5 | −1.4 | |
| Pleural effusion | 2.5 | 3.2 | 3.2 |
| Pa,O2 mm·Hg§ | −0.058 | −0.075 | −0.08 |
| Hospital D | −3.9 | −3.07 | −3.2 |
| Number of lobes involved | 1.59 | 1.4 | |
| Diastolic blood pressure | −0.059 | −0.06 | |
| Hospital C | −0.07 | −2.3 | |
Pa,O2: arterial oxygen tension
#: correlation coefficient (r)=0.55
se=2.5, fvalue=8.7
¶: r=0.442, se=4.9, f value=8.3
+: r=0.471, se=4.6
f value=12.4
§: mm·Hg×0.133=kPa