From: Which preventive measures might protect health care workers from SARS?
Risk factors | Â | SARS case | Control | OR (95% CI) | P value |
---|---|---|---|---|---|
Number of gowns worn | Single | 42 | 189 | 2.12 (1.36~3.31) | <0.001 |
 | Double | 49 | 468 |  |  |
Number of multilayered cotton mask | Single | 32 | 116 | 2.53 (1.57~4.07) | <0.001 |
Worn | Double | 59 | 541 | Â | Â |
Number of pairs of gloves worn | Single | 81 | 400 | 5.20 (2.65~10.23) | <0.001 |
 | Double | 10 | 257 |  |  |
Frequency of wearing shoe cover | Never | 55 | 237 | 3.80 (2.24~6.45) | <0.001 |
 | Sometimes | 8 | 26 | 5.04 (2.04~12.48) | <0.001 |
 | Often | 7 | 50 | 2.29 (0.93~5.67) | >0.05 |
 | Every time | 21 | 344 | 1.00 |  |
Frequency of wearing cap | Never | 68 | 380 | 1.79 (1.03~3.10) | <0.05 |
 | Sometimes | 3 | 63 | 0.48 (0.14~1.67) | >0.05 |
 | Often | 2 | 34 | 0.59 (0.13~2.65) | >0.05 |
 | Every time | 18 | 180 | 1.00 |  |
Frequency of wearing face shield in | Never | 89 | 506 | 4.05 (0.54~30.34) | >0.05 |
SARS ward | Sometimes | 1 | 107 | 0.22 (0.01~3.56) | >0.05 |
 | Often | 0 | 21 | --- | --- |
 | Every time | 1 | 23 | 1.00 |  |
Frequency of wearing goggles while | Never | 88 | 483 | 7.83 (1.07~57.63) | <0.05 |
performing operation for SARS patients | Sometimes | 2 | 103 | 0.84 (0.07~9.45) | >0.05 |
 | Often | 0 | 28 | --- | --- |
 | Every time | 1 | 43 | 1.00 |  |
Frequency of washing uncovered skin | Never | 62 | 339 | 3.29 (1.29~8.43) | <0.05 |
after caring for SARS patients | Sometimes | 17 | 142 | 2.16 (0.77~6.05) | >0.05 |
 | Often | 7 | 86 | 1.47 (0.45~4.79) | >0.05 |
 | Every time | 5 | 90 | 1.00 |  |
Frequency of washing hands after caring | Never | 23 | 186 | 0.89 (0.52~1.51) | >0.05 |
for SARS patients | Sometimes | 5 | 35 | 1.03 (0.38~2.75) | >0.05 |
 | Often | 18 | 113 | 1.14 (0.64~2.06) | >0.05 |
 | Every time | 45 | 323 | 1.00 |  |
Frequency of washing nasal cavity after | Never | 66 | 398 | 3.21 (0.98~10.53) | >0.05 |
caring for SARS patients | Sometimes | 20 | 154 | 2.51 (0.72~8.77) | >0.05 |
 | Often | 2 | 47 | 0.82 (0.13~5.13) | >0.05 |
 | Every time | 3 | 58 | 1.00 |  |
Frequency of washing oral cavity after | Never | 69 | 376 | 3.26 (1.15~9.21) | <0.05 |
caring for SARS patients | Sometimes | 17 | 147 | 2.05 (0.67~6.33) | >0.05 |
 | Often | 1 | 63 | 0.28 (0.03~2.59) | >0.05 |
 | Every time | 4 | 71 | 1.00 |  |
Special training for SARS | No | 74 | 421 | 2.44 (1.41~4.23) | <0.001 |
 | Yes | 17 | 236 |  |  |
Performing tracheotomy | Yes | 6 | 11 | 4.15 (1.50~11.50) | <0.01 |
 | No | 85 | 646 |  |  |
Performing tracheal intubations | Yes | 16 | 17 | 8.03 (3.90~16.56) | <0.001 |
 | No | 75 | 640 |  |  |
Caring for "Super Spreading Patient " | Yes | 69 | 268 | 4.55 (2.75~7.54) | <0.001 |
 | No | 22 | 389 |  |  |
Avoiding face to face while caring for | Never | 40 | 182 | 1.00 | Â |
patient | Sometimes | 23 | 200 | 0.64 (0.36~1.10) | >0.05 |
 | Often | 24 | 173 | 0.53 (0.31~0.93) | <0.05 |
 | Every time | 4 | 113 | 0.16 (0.06~0.46) | <0.001 |
Method of air ventilation in offices and | ACV | 20 | 295 | 1.00 | Â |
SARS wards | NV | 54 | 333 | 0.28 (0.14~0.54) | <0.001 |
 | NVEEF | 17 | 29 | 0.17 (0.06~0.25) | <0.001 |
Type of equipment for washing hands | AT | 5 | 125 | 1.00 | Â |
 | NAT | 85 | 509 | 4.18 (1.66~10.51) | <0.001 |
 | Others | 1 | 23 | 1.09 (0.12~9.74) | >0.05 |