Table 5. Odds ratios from a multivariate regression model of the impact of different factors on infection with P. falciparum malaria parasitemia, clinical malaria and anemia.
Vector control (ITNs, IRS, both or neither) was included as a single categorical variable in all models. Comparisons that were statistically significant a p<0.05 are indicated in bold.
| P. falciparum parasitemia | Clinical malaria | Anemia (Hb<8 g/dL) | ||||
|---|---|---|---|---|---|---|
| Parameter | Post IRS 1 | Post IRS 2 | Post IRS 1 | Post IRS 2 | Post IRS 1 | Post IRS 2 |
| IRS & ITNs | 0.89 (0.47–1.69) | 0.52 (0.28–96) | 0.14 (0.02–1.09) | 0.58 (0.25–1.36) | 0.76 (0.37–1.56) | 0.84 (0.43–1.62) |
| IRS alone | 1.37 (0.73–2.58) | 0.44 (0.24–0.80) | 1.71 (0.61–4.78) | 0.47 (0.24–0.93) | 0.56 (0.20–1.54) | 0.71 (0.32–1.56) |
| ITNs alone | 0.71 (0.41–1.23) | 0.68 (0.49–0.93) | 0.95 (0.44–2.05) | 0.59 (0.36–0.97) | 0.66 (0.39–1.12) | 1.10 (0.60–2.01) |
| Neither | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Elevation ≥1500 | 0.43 (0.20–0.94) | 0.25 (0.10–0.61) | 0.65 (0.23–1.82) | NA | 0.54 (0.18–1.63) | 0.42 (0.16–1.13) |
| Elevation <1500 | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Gender (Female) | 1.07 (0.80–1.42) | 1.09 (0.87–1.35) | 0.95 (0.49–1.82) | 1.99 (1.34–2.96) | 1.27 (0.78–2.05) | 1.18 (0.80–1.75) |
| Gender (Male) | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Age, <5 years | 3.59 (2.33–5.54) | 2.40 (1.72–3.35) | 4.84 (1.87–12.5) | 4.24 (2.61–6.88) | 1.76 (0.90–3.43) | 1.81 (1.10–2.97) |
| Age, 5 to 14 years | 5.07 (3.38–7.59) | 5.42 (4.25–6.91) | 2.34 (1.14–4.82) | 6.14 (3.64–10.4) | 0.55 (0.29–1.04) | 0.39 (0.18–0.84) |
| Age, ≥15 years | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| History of ACT use (Yes) | 2.07 (0.88–4.84) | 0.35 (0.15–0.81) | 4.11 (1.69–10.0) | 1.13 (0.43–2.94) | 1.89 (0.60–5.99) | 2.09 (0.95–4.59) |
| History of ACT use (No) | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| Use coils or sprays (Yes) | 0.48 (0.18–1.28) | 1.71 (1.17–2.49) | 0.88 (0.20–3.81) | 1.09 (0.53–2.23) | 0.59 (0.18–1.88) | 1.67 (0.87–3.23) |
| Use coils or sprays (No) | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| House type, Permanent | 0.27 (0.09–0.77) | 0.31 (0.16–0.58) | 0.25 (0.05–1.18) | 0.25 (0.11–0.57) | 0.81 (0.35–1.87) | 1.05 (0.53–2.10) |
| House type, Semi-permanent | 0.78 (0.44–1.36) | 0.67 (0.44–1.03) | 0.52 (0.24–1.11) | 0.50 (0.30–0.82) | 0.67 (0.35–1.30) | 0.81 (0.48–1.36) |
| House type, Traditional | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |