Table 3. Unadjusted odds ratios for occurrence of serum anti-DENV IgG antibodies according to demographic and environmental variables in individuals aged ≥15 years, Mayotte, 2006.
Crude odds ratio | 95% Confidence interval | P | |
Individual variables | |||
Gender | |||
Male | 0.94 | 0.70–1.27 | 0.71 |
Female | 1.00 | ||
Age, years | |||
15–24 | 1.00 | ||
25–34 | 2.15 | 1.27–3.66 | 0.005 |
35–44 | 2.33 | 1.40–3.90 | 0.002 |
45–54 | 2.65 | 1.22–5.74 | 0.015 |
≥55 | 1.66 | 0.85–3.24 | 0.136 |
Birthplace | |||
Mayotte | 1.00 | ||
Comoros | 8.60 | 5.56–13.27 | <10−3 |
Other | 1.76 | 0.55–5.53 | 0.33 |
Duration of residence, years | |||
<5 | 1.00 | ||
5–14 | 1.08 | 0.55–2.11 | 0.24 |
Over 15 | 0.18 | 0.10–0.34 | <10−3 |
Years of schooling | |||
0–6 | 1.00 | ||
≥6 | 0.42 | 0.26–0.66 | <10−3 |
Household variables | |||
Socioeconomic Asset index | |||
Below the median | 1.00 | ||
At or above the median | 0.47 | 0.32–0.70 | <10−3 |
Household size (number of inhabitants) | |||
1–2 | 1.00 | ||
3–4 | 3.34 | 1.62–6.88 | 0.002 |
≥5 | 1.44 | 0.77–2.67 | 0.238 |
House construction type | |||
Makeshift | 1.00 | ||
Adobe and stone | 0.57 | 0.29–1.11 | 0.10 |
Concrete | 0.35 | 0.20–0.52 | <10−3 |