Table 1.
Questionnaire variables and their association with colonization (P < 0·15) with any S. aureus in the adult study population
| Variable | Staphylococcus aureus | ||
|---|---|---|---|
| Crude OR (95% CI) | P value | Trend P value* | |
| Childcare employee | 1·09 (0·62–1·90) | 0·77 | |
| Season (autumn/winter as reference)† | 1·83 (0·97–3·48) | 0·062 | |
| Age‡ | 0·013 | 0·0010 | |
| Race‡ | 0·060 | ||
| Family income‡ | 0·69 | 0·14 | |
| Number of individuals in household‡ | 0·18 | 0·11 | |
| Oldest child in household‡ | 0·17 | 0·057 | |
| Family member with recent influenza-like illness | 0·62 (0·35–1·12) | 0·14 | |
| Participant spends time in a hospital as a visitor | 0·40 (0·14–1·09) | 0·066 | |
| Family member spends time in a hospital as a visitor | 0·13 (0·016–0·97) | 0·020 | |
| Family member works at a hospital with no direct patient contact | 3·14 (1·07–9·18) | 0·030 | |
| Participant works in an occupation that involves close physical contact with animal waste products | 3·36 (0·78–14·47) | 0·13 | |
| Recent contact with horses | 0·49 (0·21–1·15) | 0·10 | |
| Recent contact with goats | 0·18 (0·023–1·44) | 0·10 | |
| Family member who had recent contact with cattle | 0·36 (0·10–1·28) | 0·12 | |
| Cats on property | 0·44 (0·23–0·86) | 0·014 | |
OR, Odds ratio; CI, confidence interval.
*
Based on Cochran–Armitage test for trend.
†
Autumn/winter season included October–March; spring/summer included April–September.
‡
Categorical/ordinal variable – individual odds ratios not calculated.