TABLE 5.
Variables significantly associated (P < 0.05) with assemblage A or B infections in univariable analyses
| Assemblage and variable | No. (%)a |
OR (95% CI)b | P | |
|---|---|---|---|---|
| Case | Control | |||
| Assemblage A | ||||
| Keeping dog | 11 (40.7) | 49 (21.8) | 2.47 (1.08–5.66) | 0.029 |
| Swimming in swimming pool | 12 (44.4) | 49 (21.7) | 2.89 (1.27–6.58) | 0.009 |
| Walking in countryside | 5 (20) | 93 (42.1) | 0.34 (0.12–0.95) | 0.033 |
| Assemblage B | ||||
| Age | 0.017 | |||
| 0–4 yr | 8 (14) | 26 (11.5) | Reference | |
| 5–14 yr | 2 (3.5) | 12 (5.3) | 0.54 (0.10–2.94) | |
| 15–44 yr | 28 (49.1) | 62 (27.4) | 1.47 (0.59–3.64) | |
| 45–64 yr | 13 (22.8) | 75 (33.2) | 0.56 (0.21–1.51) | |
| ≥65 yr | 6 (10.5) | 51 (22.6) | 0.38 (0.12–1.22) | |
| Keeping any pet | 17 (30.4) | 106 (46.9) | 0.49 (0.26–0.92) | 0.025 |
| Touching any pet | 23 (44.2) | 130 (62.8) | 0.47 0.25–0.87 | 0.015 |
| Visiting or working at zoo or wildlife park | 6 (10.7) | 8 (3.6) | 3.25 (1.08–9.80) | 0.039 |
| Traveling abroadc | 12 (21.4) | 19 (8.4) | 2.97 (1.34–6.56) | 0.005 |
| Swimming in swimming pool | 21 (38.2) | 49 (21.7) | 2.23 (1.19–4.19) | 0.011 |
| Using Jacuzzi or hot tub | 12 (24.5) | 14 (6.5) | 4.70 (2.02–10.97) | <0.001 |
| Doing gardening | 13 (25.5) | 105 (48.4) | 0.36 (0.18–0.72) | 0.003 |
| Reporting water from tap with unusual taste | 4 (7.3) | 3 (1.4) | 5.70 (1.24–26.26) | 0.031 |
| Reporting water from tap being discolored | 5 (9.1) | 4 (1.8) | 5.42 (1.41–20.93) | 0.018 |
| Children at nursery/playgroup | 0.002 | |||
| No children | 26 (48.1) | 134 (59.3) | Reference | |
| Children not at nursery/playgroup | 6 (11.1) | 50 (22.1) | 0.62 (0.24–1.59) | |
| At least one child at nursery/playgroup | 22 (40.7) | 42 (18.6) | 2.70 (1.39–5.25) | |
| Changing diapers | 0.034 | |||
| No children or children not in diapers | 38 (71.7) | 186 (83.4) | Reference | |
| Children in diapers but not changing diapers | 3 (5.7) | 17 (7.6) | 0.86 (0.24–3.09) | |
| Children in diapers and changing diapers | 12 (22.6) | 20 (9) | 2.93 (1.32–6.51) | |
| Another person with diarrhea in household | 11 (21.2) | 23 (10.9) | 2.19 (0.99–4.85) | 0.048 |
a
Percentages refer to the proportions among participants who answered the question.
b
OR, odds ratio; CI, confidence interval.
c
All assemblage B cases traveled to at-risk destinations (e.g., Asia, Africa, Central America, or South America).