Table 4.
Relationship between risk of development of norovirus‐related diarrhea and each variable related to lifestyle behaviors
| Characteristics | N | Norovirus‐related diarrhea | Person‐years at risk | Incidence rate per 1000 person‐years | Facility where residents developed norovirus‐related diarrhea | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n (%) | Crude HR (95% CI) | Adjusted HR † (95% CI) | Crude HR (95% CI) | Adjusted HR † (95% CI) | ||||||||
| Number of roommates | ||||||||||||
| 1 | 186 | 0 (0) | 119.6 | NA | NA | NA | NA | NA | ||||
| 2 | 114 | 0 (0) | 75.7 | NA | NA | NA | NA | NA | ||||
| 3 | 117 | 3 (2.6) | 102.9 | 29.16 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| 4 | 1310 | 10 (0.8) | 987.5 | 9.11 | 0.38 | (0.10–1.38) | 0.37 | (0.10–1.36) | 0.66 | (0.18–2.42) | 0.82 | (0.21–3.17) |
| History of hospitalization in the previous year | ||||||||||||
| No | 690 | 9 (1.3) | 616.5 | 14.60 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Yes | 1037 | 4 (0.4) | 669.2 | 5.98 | 0.46 | (0.14–1.49) | 0.48 | (0.15–1.58) | 1.14 | (0.34–3.85) | 1.20 | (0.34–4.23) |
| Tube feeding | ||||||||||||
| No | 1647 | 12 (0.7) | 1218.2 | 9.85 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Yes | 80 | 1 (1.3) | 67.5 | 14.81 | 1.36 | (0.18–10.48) | 6.82 | (0.69–67.39) | 1.01 | (0.13–7.80) | 6.49 | (0.59–70.82) |
| Pad usage | ||||||||||||
| No | 273 | 7 (2.6) | 202.9 | 34.50 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Used (night only or always) | 1454 | 6 (0.4) | 1082.8 | 5.54 | 0.16 | (0.06–0.49) | 0.14 | (0.05–0.45) | 0.29 | (0.10–0.86) | 0.46 | (0.12–1.78) |
| Independence in walking | ||||||||||||
| Independent | 187 | 1 (0.5) | 145.4 | 6.88 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Using a cane | 88 | 2 (2.3) | 62.6 | 31.97 | 5.45 | (0.49–60.23) | 5.80 | (0.52–64.33) | 11.80 | (1.06–130.95) | 16.68 | (1.35–206.52) |
| Using a walking frame | 251 | 0 (0) | 191.7 | NA | NA | NA | NA | NA | ||||
| Impossible | 1201 | 10 (0.8) | 886.1 | 11.29 | 1.69 | (0.22–13.22) | 1.58 | (0.19–13.10) | 2.87 | (0.37–22.46) | 5.49 | (0.54–55.88) |
Abbreviations: CI, confidence interval; HR, hazard ratio; NA, not applicable.
†
Model includes sex, age and care‐needs level.