Table 3. Analysis of variables potentially associated with arbovirus infection (dengue, Zika, and chikungunya virus), Spain, 2009–2018*.
| Variable | Univariate analysis |
Multivariate analysis |
|||
|---|---|---|---|---|---|
| OR (95% CI) | p value | aOR (95% CI)† | p value | ||
| Type of patient | |||||
| Immigrant | Referent | NA | Referent | NA | |
| VFR immigrant | 50.18 (32.80–76.78) | <0.001 | 47.15 (30.78–72.22) | <0.001 | |
| VFR traveler | 28.89 (15.86–52.65) | <0.001 | 33.53 (18.20–61.77) | <0.001 | |
| Traveler |
47.09 (30.96–71.62) |
<0.001 |
|
45.18 (29.68–68.77) |
<0.001 |
| Age, y | 1.01 (1.01–1.02) | <0.001 | 1.01 (1.00–1.01) | 0.003 | |
| Female sex |
1.46 (1.27–1.69) |
<0.001 |
|
1.40 (1.21–1.61) |
<0.001 |
| Immunosuppression, yes/no‡ | 0.28 (0.16–0.49) | <0.001 | 0.61 (0.34–1.10) | 0.099 | |
| Pretravel advice, yes/no‡§ | 0.68 (0.58–0.80) | <0.001 | 0.65 (0.55–0.77) | <0.001 | |
| Travel, d§ | 1.00 (0.99–1.00) | 0.807 | 0.99 (0.99–1.00) | 0.900 | |
*aOR, adjusted odds ratio; NA, not applicable; OR, odds ratio; VFR, visiting friends and relatives. †For type of patient, age, female sex, and immunosuppression. ‡Ratios reflect risk for those who answered yes compared with those who answered no. §For travelers and VFR only.