TABLE 2.
Risk factors for MRSA transmission to household members
| Potential risk factor | Transmission of MRSA (n = 56)a | No transmission of MRSA (n = 28)a | P value | OR (95% CI) |
|---|---|---|---|---|
| Female | 28 (50) | 12 (43) | 0.54 | 1.33 (0.54-3.22) |
| Median age in yrs (range) | 23 (0-77) | 18 (4-50) | 0.77b | |
| Relationship to index person | ||||
| Partner | 16 (29) | 2 (7) | 0.02 | 5.20 (1.10-24.52) |
| Child | 11 (20) | 8 (29) | 0.36 | 0.61 (0.21-1.75) |
| Parent | 16 (29) | 9 (32) | 0.74 | 0.84 (0.32-2.26) |
| Sibling | 8 (14) | 4 (14) | 1.00c | |
| Other | 5 (9) | 5 (18) | 0.29 | 0.45 (0.12-1.71) |
| Contact with index person in h/dayd | ||||
| <1 | 2 (5) | 2 (11) | 0.39 | 1.00 |
| 1-4 | 3 (8) | 4 (22) | 0.82 | 0.75 (0.06-8.83) |
| 5-10 | 11 (30) | 8 (28) | 0.49 | 1.10 (0.24-20.40) |
| >10 | 21 (57) | 7 (39) | 0.31 | 3.00 (0.35-25.46) |
a
Values are the number (%) of household contacts with the risk factor, unless otherwise indicated.
b
Mann-Whitney test (two-sided).
c
Fisher's exact test.
d
The number of hours of contact per day with the index person was only obtained for 55/84 household contacts.