Table 3 Activity history, risk factors and protect factor of the scrub typhus in this outbreak*
Exposure within one month | Case (n = 29) No.(%) | Control† (n = 116) No.(%) | Crude OR(95% CI) | Adjusted OR(95% CI)‡ |
|---|---|---|---|---|
Outdoor activity history | ||||
Travelling | 24(82.8) | 102(87.9) | 0.7(0.2,2.0) | 0.5(0.2,1.9) |
Morning exercise in park or field | 22(75.9) | 64(55.2) | 2.6(1.0,6.4) | 3.0 (1.103,8.2) |
Activity history in Xiaogang Park | 21(72.4) | 28(24.1) | 8.3(3.8,20.7) | 9.1(3.267,25.5) |
Activity history in other parks | 9(31.0) | 28(24.1) | 1.4(0.6,3.5) | 1.5(0.587,3.8) |
Activity places in Xiaogang Park | ||||
Picnic place | 9(31.0) | 34(29.3) | 1.1(0.4,2.6) | 1.2(0.5,3.1) |
Shi Ma Gang | 5(17.2) | 27(23.3) | 0.7(0.2,2.0) | 0.7(0.2,2.3) |
Greenery pottery work ship | 16(55.2) | 33(28.4) | 3.1(1.3,7.1) | 4.6(1.7,12.5) |
Risk behaviors | ||||
Sitting on lawn | 5(18.5) | 3(2.8) | 8.0(1.8,35.8) | 8.0(1.4,44.5) |
Fishing | 6(20.7) | 15(12.9) | 1.8(0.6,5.0) | 2.2(0.6,7.9) |
Close contact with cats | 3(10.3) | 5(4.3) | 2.6(0.6,11.4) | 2.4(0.4,13.6) |
Close contact with rats | 9(31.0) | 15(12.9) | 3.0(1.2,7.9) | 3.3(1.2,9.6) |
Sitting near rat holes | 7(24.1) | 9(7.8) | 3.8(1.3,11.2) | 6.8(1.2,38.1) |
Keep dogs | 4(13.8) | 14(12.1) | 0.9(0.3,2.8) | 0.9(0.3,3.0) |
Keep cats | 3(10.3) | 6(5.2) | 0.5(0.1,2.0) | 0.6(0.1,2.3) |
Protect behaviors | ||||
Wearing long-sleeved clothing | 8(27.6) | 62(53.4) | 0.3(0.1,0.8) | 0.3(0.1,0.7) |
Using insect repellent | 5(17.9) | 22(20.2) | 1.2(0.4,3.4) | 1.2(0.4,4.0) |