Table 3.
Multivariate logistic regression model, reporting associations with positive virus detection in respiratory specimens
| Variable | Adjusted OR* (95% CI) | P‐value | Virus not detected n (%) | Virus detected n (%) |
|---|---|---|---|---|
| Age (ref: 18–24 years) | ||||
| 18–24 years | 1 | – | 113 (31·5) | 103 (36·2) |
| 25–34 years | 0·51 (0·31, 0·83) | 0·01 | 84 (23·4) | 47 (16·5) |
| 35–44 years | 0·93 (0·57, 1·5) | 0·8 | 60 (16·7) | 63 (22·2) |
| 45–54 years | 0·52 (0·30, 0·90) | 0·02 | 60 (16·7) | 40 (14·1) |
| 55–64 years | 0·61 (0·33, 1·1) | 0·1 | 42 (11·7) | 31 (10·9) |
| Sex (ref: male) | ||||
| Male | 1 | – | 155 (43·2) | 112 (39·4) |
| Female | 1·2 (0·88, 1·7) | 0·2 | 204 (56·8) | 172 (60·6) |
| Race (ref: Caucasian) | ||||
| Caucasian | 1 | – | 327 (91·1) | 252 (88·7) |
| Asian | 1·4 (0·72, 2·6) | 0·3 | 23 (6·4) | 23 (8·1) |
| Other | 1·5 (0·56, 4·2) | 0·4 | 9 (2·5) | 9 (3·2) |
| Smoking status (ref: Current) | ||||
| Current | 1 | – | 43 (12·0) | 36 (12·7) |
| Ever | 0·88 (0·49, 1·6) | 0·6 | 91 (25·3) | 77 (27·1) |
| Never | 0·70 (0·41, 1·2) | 0·2 | 217 (60·4) | 169 (59·5) |
| Unknown | 0·16 (0·03, 0·88) | 0·04 | 8 (2·2) | 2 (0·7) |
| Vaccinated (ref: placebo) | ||||
| Placebo | 1 | – | 132 (36·8) | 99 (34·9) |
| Vaccine | 1·1 (0·77, 1·55) | 0·6 | 227 (63·2) | 185 (65·1) |
*Adjusted for month of collection and study site. Bold text indicates P < 0.05.