Volume 10, Number 2—February 2004
THEME ISSUE
2004 SARS Edition
SARS Transmission
SARS among Critical Care Nurses, Toronto
Mark B. Loeb*
, Allison McGeer†, Bonnie Henry‡, Marianna Ofner§, David Rose¶, Tammy Hlywka*, Joanne Levie*, Jane McQueen*, Stephanie Smith*, Lorraine Moss*, Andrew Smith*, Karen Green†, and Stephen D. Walter*
, Allison McGeer†, Bonnie Henry‡, Marianna Ofner§, David Rose¶, Tammy Hlywka*, Joanne Levie*, Jane McQueen*, Stephanie Smith*, Lorraine Moss*, Andrew Smith*, Karen Green†, and Stephen D. Walter*
Table 3
Nurses’ risk of acquiring SARS based on use of personal protective equipmenta
| Type of personal protective equipment | Attack rate (%) according to personal protective equipment used |
Relative risk (95% CI) | 2-Tailed Fisher exact p value | |
|---|---|---|---|---|
| Consistent | Inconsistent | |||
| Gown |
3/20 (15) |
5/12 (42) |
0.36 (0.10 to 1.24) |
0.12 |
| Gloves |
4/22 (18) |
4/10 (40) |
0.45 (0.14 to 1.46) |
0.22 |
| N95 or surgical mask |
3/23 (13) |
5/9 (56) |
0.23 (0.07 to 0.78) |
0.02 |
| N95a |
2/16 (13) |
5/9 (56) |
0.22 (0.05 to 0.93) |
0.06 |
| Surgical maskb |
1/4 (25) |
5/9 (56) |
0.45 (0.07 to 2.71) |
0.56 |
| N95 versus surgical maskc | 2/16 (13) | 1/4 (25) | 0.50 (0.06 to 4.23) | 0.51 |
aSARS, severe acute respiratory syndrome; CI, confidence interval.
bThe comparator is use of no mask. The denominator n (total=32) changes for these comparisons as the nurses who consistently used the indicated personal protective equipment were compared to nurses who wore no masks.
cConsistent use of the N95 mask versus consistent use of a surgical mask. The denominator n (total=32) changes for these comparisons as the nurses who consistently used the indicated personal protective equipment were compared to the indicated unique group, rather than to the rest of the nurses.
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