From: Serological measures to assess the efficacy of malaria control programme on Ambae Island, Vanuatu
 |  | P. falciparum seropositivity | P. vivax seropositivity | Anopheles seropositivity | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Variablea | Category | n/N b | Crude OR | P | Adjusted OR | P | n/N c | Crude OR | P | Adjusted OR | P | n/N | Crude OR | P | Adjusted OR | P |
 |  |  | (95% CI) |  | (95% CI) |  |  | (95% CI) |  | (95% CI) |  |  | (95% CI) |  | (95% CI) |  |
Survey year | 2003 | 143/229 | 1 | Â | 1 | Â | 76/231 | 1 | Â | 1 | Â | 90/231 | 1 | Â | 1 | Â |
 | 2007 | 72/280 | 0.21 (0.14–0.30) | < 0.001 | 0.19 (0.12– 0.28) | < 0.001 | 58/275 | 0.55 (0.37–0.81) | 0.003 | 0.51 (0.33– 0.77) | 0.001 | 2/282 | 0.01 (0.00– 0.05) | < 0.001 | 0.01 (0.00– 0.04) | < 0.001 |
Age group | 0–5 | 19/102 | 1 |  | 1 |  | 20/100 | 1 |  | 1 |  | 15/103 | 1 |  | 1 |  |
 | 6–10 | 51/109 | 3.84 (2.06– 7.17) | < 0.001 | 4.07 (2.09– 7.93) | < 0.001 | 12/107 | 0.51 (0.23– 1.10) | 0.084 | 0.47 (0.22– 1.04) | 0.062 | 24/108 | 1.68 (0.82– 3.41) | 0.154 | 1.58 (0.69– 3.63) | 0.280 |
 | 11–20 | 57/111 | 4.61 (2.48– 8.59) | < 0.001 | 4.76 (2.45– 9.25) | < 0.001 | 22/110 | 1.00 (0.51– 1.97) | 1.000 | 0.93 (0.47–1.84) | 0.830 | 19/111 | 1.21 (0.58– 2.53) | 0.610 | 0.91 (0.39– 2.09) | 0.822 |
 | > 20 | 88/187 | 3.89 (2.18– 6.90) | < 0.001 | 4.30 (2.32– 7.96) | < 0.001 | 80/189 | 2.94 (1.66– 5.18) | < 0.001 | 2.88 (1.62– 5.13) | < 0.001 | 34/191 | 1.27 (0.66– 2.46) | 0.478 | 1.15 (0.54– 2.49) | 0.714 |