Table 2.
Univariate analysis of the variables among normal and abnormal chest X-ray findings
| Variables | n, SD | OR (95% CI) | P | |
|---|---|---|---|---|
| Patients with normal CXR (n=189) | Patients with abnormal CXR (n=210) | |||
| Mean age (years) | 40.35 (14.98) | 46.43 (14.37) | 1.03 (1.01-1.04) | <0.001 |
| Age >60 years | 21 (11.11) | 37 (17.62) | 1.71 (0.96-3.04) | 0.068 |
| Male sex | 93 (49.21) | 79 (37.62) | 0.62 (0.42-0.93) | 0.020 |
| Duration of fever | 8.4 (3.4) | 8.1 (3.1) | 0.97 (0.91-1.03) | 0.337 |
| Breathlessness | 52 (27.51) | 157 (74.76) | 7.8 (5-12.19) | <0.001 |
| Cough | 34 (17.99) | 56 (26.67) | 1.66 (1.02-2.68) | 0.039 |
| Diabetes mellitus | 27 (14.29) | 34 (16.19) | 1.16 (0.67-2.01) | 0.598 |
| Respiratory rate (/min) | 23.53 (6.20) | 31.93 (8.80) | 1.17 (1.13-1.21) | <0.001 |
| SpO2 <90% | 16 (8.47) | 80 (38.28) | 6.71 (3.74-12.01) | <0.001 |
| Eschar | 92 (48.68) | 143 (68.10) | 2.25 (1.5-3.38) | <0.001 |
| SOFA score | 3.01 (2.79) | 7.59 (4.50) | 1.45 (1.34-1.58) | <0.001 |
| Total WBC count (cells/mL) | 9202.70 (4536.57) | 11,066.19 (5265.81) | 1.00 (1.00-1.00) | <0.001 |
| Creatinine (mg/dL) | 1.33 (1.14) | 1.78 (1.43) | 1.43 (1.15-1.79) | 0.002 |
| Bilirubin >2 (mg/dL) | 28 (14.81) | 82 (39.61) | 3.77 (2.31-6.15) | <0.001 |
| Albumin (mg/dL) | 3.29 (0.62) | 2.66 (0.56) | 0.17 (0.11-0.26) | <0.001 |
| SGOT (U/L) | 136.88 (157.14) | 152.95 (126.74) | 1.001 (0.999-1.002) | 0.266 |
| SGPT (U/L) | 88.68 (83.54) | 80.43 (66.35) | 0.999 (0.996-1.001) | 0.278 |
SOFA: Sequential organ failure assessment, SGOT: Serum glutamic oxaloacetic transaminase, SGPT: Serum glutamic pyruvate transaminase, OR: Odds ratio, CI: Confidence interval, CXR: Chest X-ray, SD: Standard deviation