Table 5 Assessment of risk factors for asymptomatic malaria infections in the rainy and dry seasons
Predictive factors | Category | Rainy season | Dry season | Risk ratio (95% CI)2 | ||
|---|---|---|---|---|---|---|
PCR+ (%) | AOR (95% CI)1 | PCR+ (%) | AOR (95% CI)1 | Rainy/dry seasons | ||
Overall | 30.1 | 19.9 | 1.74 (1.38−2.19)*** | |||
Individual-level | ||||||
Gender | Male | 36.8 | 1.61 (1.05−2.46)* | 26.2 | 1.36 (0.96−1.92) | 1.64 (1.12−2.41)* |
Female | 26.3 | 1 | 17.6 | 1 | 1.67 (1.24−2.24)** | |
Age groups (years) | ≤ 15 | 35.8 | 0.97 (0.62−1.52) | 31.5 | 1.88 (1.32−2.67)*** | 1.21 (0.80−1.84) |
> 15 | 27.8 | 1 | 16.6 | 1 | 1.94 (1.46−2.56)*** | |
Bed net use | No | 48.1 | 10.53 (6.38−17.40)*** | 28.9 | 3.81 (2.67−5.43)*** | 2.28 (1.72−3.03)*** |
Yes | 8.1 | 1 | 9.2 | 1 | 0.87 (0.51−1.50) | |
Household-level | ||||||
Major material of house | Wood/bamboo | 30.1 | – | 20.6 | 2.15 (1.16−4.0)* | 1.66 (1.31−2.10)*** |
Brick | 31.0 | 1 | 12.9 | 1 | 3.05 (1.15−8.11)* | |
Use of IRS | No | 42.3 | 7.78 (4.57−13.25)*** | 23.2 | 2.29 (1.54−3.40)*** | 2.43 (1.86−3.17)*** |
Yes | 9.7 | 1 | 11.4 | 1 | 0.84 (0.47−1.49) | |
Elevation of house (m) | ≤ 312 | 35.8 | 1.15 (0.75−1.76) | 24.7 | 1.56 (1.09−2.23)* | 1.71 (1.26−2.31)** |
> 312 | 24.1 | 1 | 15.1 | 1 | 1.88 (1.30−2.71)** | |
Distance to the nearest clinic (m) | ≤ 180 | 21.8 | 1 | 12.8 | 1 | 1.91 (1.31−2.77)** |
> 180 | 37.9 | 1.90 (1.16−3.11)* | 28.0 | 2.62 (1.78−3.87)*** | 1.57 (1.16−2.13)** | |
Distance to the nearest road (m) | ≤ 15 | 33.2 | 1.16 (0.76−1.78) | 22.6 | 1.48 (1.05−2.08)* | 1.21 (1.29−2.26)*** |
> 15 | 25.0 | 1 | 15.1 | 1 | 1.87 (1.24−2.81)** | |