Table 4. Comparison of complications in elderly and non-elderly scrub typhus patients.
| Characteristic | Non-elderly (%) (n = 398) | Elderly (%) (n = 312) | Odds ratio (95% CI) | P-value |
|---|---|---|---|---|
| Severe scrub typhus | 84 (21.1) | 84 (26.9) | 1.377 (0.973–1.949) | 0.071 |
| Gastrointestinal tracta | 61 (15.3) | 17 (5.4) | 0.318 (0.182–0.557) | <0.001 |
| Respiratory systemb | 20 (5.0) | 31 (9.9) | 2.085 (1.164–3.735) | 0.013 |
| Acute kidney injury | 7 (1.8) | 28 (9.0) | 5.507 (2.372–12.785) | <0.001 |
| Cardiovascular systemc | 7 (1.8) | 26 (8.3) | 5.078 (2.174–11.862) | <0.001 |
| CNS dysfunctiond | 2 (0.5) | 10 (3.2) | 6.556 (1.426–30.144) | 0.016 |
CI, confidence interval; CNS, central nervous system.
aHepatic dysfunction or gastrointestinal bleeding.
bAcute respiratory distress syndrome or pneumonia.
cShock or cardiac arrhythmia or myocarditis.
dGlasgow coma scale ≤12 without other causes, meningoencephalitis or seizure without other causes.