Table 2.
Univariate association of radiographic characteristics and mortality in the original dataset (n = 1274).
| Radiographic characteristics | Frequency, no, (%) | Mortality rate (%) | OR (95% CI) | P value |
|---|---|---|---|---|
| Cardiomegaly | ||||
| No | 711 (55.8) | 15.5 | …a | |
| Yes | 563 (44.2) | 23.6 | 1.69 (1.26–2.26) | <0.0005 |
|
| ||||
| Number of lobes involved with infiltrates | ||||
| 1 | 509 (40.0) | 2.8 | …a | |
| ≥2 | 765 (60.0) | 29.9 | 15.08 (8.66–28.41) | <0.0001 |
|
| ||||
| Location of infiltrates | ||||
| Unilateral | 666 (52.3) | 8.0 | …a | |
| Bilataral | 608 (47.7) | 31.2 | 5.25 (3.75–7.45) | <0.0001 |
|
| ||||
| Pleural effusion (location) | ||||
| None | 773 (60.7) | 12.5 | …a | |
| Unilateral | 280 (22.0) | 20.4 | 1.78 (1.22–2.59) | <0.005 |
| Bilateral | 221 (17.3) | 40.3 | 4.69 (3.28–6.71) | <0.0001 |
|
| ||||
| Cavitation | ||||
| No | 1237 (97.1) | 18.8 | …a | |
| Yes | 37 (2.9) | 27.0 | 1.60 (0.68–3.46) | 0.21 |
Univariate analysis was performed by Fisher's exact test. P values of <0.05 are shown in bold. aellipses indicate that this variable was used as the baseline variable in the univariate analysis.