Table 1.
Prevalence of IgG seropositivity and past hospitalisation for dengue by sociodemographic characteristics in children from Bucaramanga, Colombia
| Characteristic | Seropositive | Hospitaliseda | ||||
|---|---|---|---|---|---|---|
| n | % | Prevalence ratio (95% CI)b | n | % | Prevalence ratio (95% CI) | |
| Sex | ||||||
| Female | 1012 | 61.0 | 1.00 | 555 | 9.6 | 1.00 |
| Male | 1026 | 60.7 | 1.00 (0.93–1.07) | 556 | 10.3 | 1.07 (0.75–1.55) |
| Pc | 0.91 | 0.70 | ||||
| Age group, years | ||||||
| 2 to <5 | 387 | 32.0 | 1.00 | 111 | 10.8 | 1.00 |
| 5 to <11 | 1003 | 59.0 | 1.84 (1.58–2.15) | 522 | 10.2 | 0.94 (0.52–1.70) |
| 11 to <16 | 648 | 80.9 | 2.52 (2.17–2.94) | 478 | 9.4 | 0.87 (0.47–1.60) |
| P, trendd | <0.0001 | 0.61 | ||||
| Informant's educatione | ||||||
| Primary or less | 669 | 67.6 | 1.00 | 410 | 6.1 | 1.00 |
| Secondary | 1278 | 58.0 | 0.86 (0.79–0.93) | 655 | 11.9 | 1.95 (1.25–3.06) |
| University | 82 | 51.2 | 0.76 (0.60–0.95) | 41 | 17.1 | 2.80 (1.12–6.99) |
| P, trend | <0.0001 | 0.001 | ||||
| Missing | 9 | 55.6 | 5 | 0.0 | ||
| Monthly family income | ||||||
| <1 min wage salary | 664 | 61.6 | 1.00 | 370 | 9.5 | 1.00 |
| 1–2 min wage salaries | 679 | 61.7 | 1.00 (0.91–1.10) | 357 | 9.2 | 0.98 (0.61–1.57) |
| ≥3 min wage salaries | 126 | 60.3 | 0.98 (0.83–1.16) | 70 | 11.4 | 1.21 (0.59–2.47) |
| P, trend | 0.88 | 0.77 | ||||
| Missing | 569 | 59.1 | 314 | 10.8 | ||
| Home ownership | ||||||
| No | 1572 | 59.5 | 1.00 | 832 | 8.4 | 1.00 |
| Yes | 458 | 65.3 | 1.10 (1.01–1.20) | 274 | 14.6 | 1.74 (1.19–2.54) |
| P | 0.03 | 0.004 | ||||
| Missing | 8 | 75.0 | 5 | 0.0 | ||
| Housing type | ||||||
| House or apartment | 1314 | 60.4 | 1.00 | 713 | 10.4 | 1.00 |
| One room or multifamily | 719 | 61.8 | 1.02 (0.94–1.11) | 395 | 9.1 | 0.88 (0.59–1.30) |
| P | 0.57 | 0.52 | ||||
| Missing | 5 | 60.0 | 3 | 0.0 | ||
| People per room | ||||||
| 1 | 184 | 65.8 | 1.00 | 112 | 14.3 | 1.00 |
| 2 | 1252 | 61.2 | 0.93 (0.82–1.05) | 681 | 11.2 | 0.78 (0.48–1.27) |
| 3 | 454 | 59.0 | 0.90 (0.78–1.03) | 238 | 5.5 | 0.38 (0.19–0.76) |
| >3 | 143 | 57.3 | 0.87 (0.72–1.05) | 77 | 6.5 | 0.45 (0.18–1.15) |
| P, trend | 0.16 | 0.02 | ||||
| Missing | 5 | 60.0 | 3 | 0.0 | ||
| SESf | ||||||
| 1 or 2 (lower) | 1199 | 62.7 | 1.00 | 660 | 9.1 | 1.00 |
| 3 or 4 | 834 | 58.2 | 0.93 (0.86–1.01) | 448 | 11.2 | 1.23 (0.85–1.78) |
| P | 0.07 | 0.28 | ||||
| Missing | 5 | 60.0 | 3 | 0.0 | ||
a
Among IgG seropositive children only.
b
From GEE with the Poisson distribution. Seropositivity or hospitalisation was the dichotomous outcome and indicator variables for each characteristic were predictors. In all models, the robust sandwich estimate of the variance was used to account for intra-family correlations.
c
Wald test.
d
Wald test for a variable representing ordinal categories of the predictor entered into the model as a continuous covariate.
e
Informant: mother, 89.4%; father, 10.2%; other guardian, 0.5%.
f
According to the local government classification for public services fees.