Table 4.
Association between selected background characteristics and death from norovirus gastroenteritisa
| Characteristics | Mortality | Univariate analysis | Age/sex-adjusted analysis | |
|---|---|---|---|---|
| n/N (%) | OR (95% CI) | aOR (95% CI) | ||
| Sex | Male | 12/194 (6) | 1.00 | 1.00 |
| Female | 9/273 (3) | 0.52 (0.21–1.25) | 0.41 (0.16–1.00) | |
| Age (years) | 60–69 | 2/66 (3) | 1.00 | 1.00 |
| 70–79 | 3/145 (2) | 0.68 (0.11–5.22) | 0.69 (0.11–5.35) | |
| ≥80 | 16/259 (6) | 2.11 (0.58–13.5) | 2.63 (0.71–17.1) | |
| (Trend P = 0.11) | (Trend P = 0.05) | |||
| Residence at symptom onset | Home | 11/287 (4) | 1.00 | 1.00 |
| Long-term care facility | 7/62 (11) | 3.19 (1.13–8.48) | 3.39 (1.15–9.55) | |
| Hospital | 3/115 (3) | 0.67 (0.15–2.20) | 0.67 (0.15–2.22) | |
| Underlying illnesses | Absent | 1/45 (2) | 1.00 | 1.00 |
| Present | 20/424 (5) | 2.18 (0.44–39.5) | 2.16 (0.43–39.4) | |
| Chronic respiratory disease | Absent | 17/438 (4) | 1.00 | 1.00 |
| Present | 4/32 (13) | 3.54 (0.97–10.4) | 3.90 (1.01–12.5) | |
| Collagen diseases | Absent | 20/463 (4) | 1.00 | 1.00 |
| Present | 1/7 (14) | 3.69 (0.19–23.1) | 4.11 (0.21–28.1) | |
| Hematological disorders | Absent | 19/457 (4) | 1.00 | 1.00 |
| Present | 2/13 (15) | 4.19 (0.62–17.1) | 4.40 (0.64–18.9) | |
| Complications | ||||
| Aspiration pneumonia | Absent | 14/439 (3) | 1.00 | 1.00 |
| Present | 7/28 (25) | 10.1 (3.53–27.2) | 8.97 (3.06–24.7) | |
| Others | Absent | 15/427 (4) | 1.00 | 1.00 |
| Present | 6/35 (17) | 5.68 (1.91–15.2) | 5.42 (1.79–14.8) | |
Abbreviations: OR odds ratio, aOR adjusted odds ratio, CI confidence interval
aLogistic regression model