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Table 4 Association between selected background characteristics and death from norovirus gastroenteritisa

From: Nationwide epidemiologic study of norovirus-related hospitalization among Japanese older adults

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)
  1. Abbreviations: OR odds ratio, aOR adjusted odds ratio, CI confidence interval
  2. aLogistic regression model