Table 2.
Univariate and multivariable logistic regression analysis of risk factors for acute gastroenteritis among students in Guangzhou, China
| Variables | Cases (%) | Control (%) | single factor analysis | Multivariable logistic regression | ||
|---|---|---|---|---|---|---|
| (N = 157) | (N = 628) | OR | 95%CI# | Adjusted OR | 95%CI# | |
| Had eaten delivery food 3 days ago | 90(57.32) | 209(33.28) | 2.69** | 1.88–3.85 | 1.96* | 1.33–2.88 |
| Dining place 1 day before | ||||||
| Lunch | ||||||
| Home | 24(15.29) | 65(10.35) | ||||
| School canteen | 117(74.52) | 546(86.94) | 0.58* | 0.35–0.97 | ||
| Delivery food | 16(10.19) | 17(2.71) | 2.55* | 1.11–5.83 | ||
| Midnight snack | ||||||
| Home | 29(18.47) | 79(12.58) | ||||
| School canteen | 107(68.15) | 524(83.44) | 0.65 | 0.38–1.10 | ||
| Delivery food | 21(13.38) | 25(3.98) | 6.92** | 3.49–13.73 | 6.96** | 2.48–19.48 |
| Dining place 2 days before | ||||||
| Dinner | ||||||
| Home | 22(14.01) | 74(11.78) | ||||
| School canteen | 114(72.61) | 523(83.28) | 0.73 | 0.44–1.23 | ||
| Delivery food | 21(13.38) | 31(4.94) | 2.28* | 1.10–4.73 | ||
| Midnight snack | ||||||
| Home | 31(19.75) | 93(14.81) | ||||
| School canteen | 106(67.52) | 505(80.41) | 0.63* | 0.40–1.00 | ||
| Delivery food | 20(12.74) | 30(4.78) | 2 | 1.00–4.01 | ||
| Exposure history | ||||||
| To similar cases 72 h before | 26(16.56) | 25(3.98) | 4.78 | 2.68–8.55 | 2.94** | 1.53–5.62 |
| Have contact patient’s excrement | 5(3.18) | 4(0.64) | 5.13* | 1.36–19.23 | ||
| Short distance (≤1 m) contact or handling of excrement | 10(6.37) | 7(1.11) | 6.02** | 2.26–16.13 | ||
| Case in the same dormitory | 46(29.30) | 65(10.35) | 3.59** | 2.34–5.12 | 2.6** | 1.61–4.21 |
| Habit of washing hands | ||||||
| No | 1(0.64) | 2(0.32) | ||||
| Occasionally | 15(9.55) | 36(5.73) | 0.83 | 0.07–9.90 | ||
| Sometimes | 43(27.39) | 119(18.95) | 0.72 | 0.06–8.17 | ||
| Every time | 98(62.42) | 471(75.00) | 0.42 | 0.04–4.64 | ||
| With hand sanitizer or soap | ||||||
| No | 11(7.01) | 18(2.87) | ||||
| Occasionally | 81(51.59) | 306(48.73) | 0.43* | 0.20–0.95 | ||
| Sometimes | 32(20.38) | 81(12.90) | 0.65 | 0.28–1.52 | ||
| Every time | 33(21.02) | 223(35.51) | 0.24 | 0.11–0.558 | 0.33* | 0.13–0.83 |
*: p < 0.05;**: p < 0.01
#: 95%CI is 95% certificated interval