Table 2.
Univariate logistic regression for DENV IgG seroprevalence in the studied schoolchildren population in 2010–2012 from Medellin.
| 2010 (n=1,788) | Crude OR | 95% CI | 2011(n=1,888) | Crude OR | 95% CI | 2012 (n=709) | Crude OR | 95% CI | |
|---|---|---|---|---|---|---|---|---|---|
| Gender | % (n) | % (n) | % (n) | ||||||
| Male | 52.9 (459/867) | Ref. | — | 57.2 (510/891) | Ref. | — | 59.9 (200/334) | Ref. | — |
| Female | 54.6 (503/921) | 1.03 | 0.95–1.12 | 59.6 (594/997) | 1.04 | 0.96–1.12 | 68.8 (258/375) | 1.15∗ | 1.03–1.28 |
|
| |||||||||
| Self-reported ethnic group | |||||||||
| Afro-descent | 45.6 (41/90) | Ref. | — | 63.1 (41/65) | Ref. | — | 71.4 (10/14) | Ref. | — |
| Mestizo | 54.2 (921/1,698) | 1.19 | 0.95–1.50 | 58.8 (1,058/1,800) | 0.93 | 0.77–1.13 | 64.5 (448/695) | 0.90 | 0.64–1.26 |
|
| |||||||||
| Age group (years) | |||||||||
| 5 to 9 | 34.9 (199/571) | Ref. | — | 45.4 (181/399) | Ref. | — | 50 (94/188) | Ref. | — |
| 10 to 14 | 61.6 (594/965) | 2.99∗ | 2.41–3.71 | 60.2 (660/1,097) | 1.90∗ | 1.51–2.40 | 70.5 (292/414) | 2.40∗ | 1.68–3.41 |
| 15 to 19 | 67.1 (169/252) | 3.80∗ | 2.78–5.21 | 67.1 (264/392) | 2.60∗ | 1.95–3.47 | 64.6 (72/107) | 2.06∗ | 1.25–3.40 |
|
| |||||||||
| Socioeconomic status | |||||||||
| Low | 58.2 (592/1,017) | Ref. | — | 60.0 (682/1,137) | Ref. | — | 61.2 (210/343) | Ref. | — |
| Middle | 49.1 (318/648) | 0.69∗ | 0.57–0.84 | 56.5 (368/651) | 0.87 | 0.72–1.6 | 68.0 (247/363) | 1.37∗ | 1.0–1.85 |
| High | 42.3 (52/123) | 0.53∗ | 0.36–0.77 | 54.6 (53/97) | 0.80 | 0.53–1.22 | 0 (0/0) | — | — |
|
| |||||||||
| Study year | |||||||||
| IgG positive | 53.8 (962/1,788) | Ref. | — | 58.8 (1,104/1,888) | 1.21∗ | 1.06–1.38 | 64.6 (458/709) | 1.57∗ | 1.30–1.87 |
∗Statistically significant: p < 0.05; OR: odds ratio; CI: confidential interval.