Table 4 Bivariate and multivariate analysis of factors associated with asymptomatic malaria in schoolchildren in Gomma district, Jimma Zone, Oromia, Ethiopia

Sex

Female

1

1

Male

1.814 (0.99, 3.30)

Age (in years)

6–11

1.16 (0.65, 2.04)

12–15

1

Grade level

1–4

0.90 (0.51, 1.59)

5–8

1

Slept inside ITN the previous

No

0.589 (0.212, 1.64)

Yes

1

Previous history of malaria

No

1

Yes

3.89 (1.72, 8.79)

Hb level(g/dl)

 < 11.5

14.22 (7.38, 27.37)

12.05 (5.329, 27.274)

 ≥ 11.5

1

1

Household factors

 Sex of the household head (HHH)

Female

1

Male

4.41 (0.60, 32.40)

 Age of the HHH

 < 35

1

35–44

0.89 (0.24, 3.28)

45–54

0.83 (0.23, 2.98)

 ≥ 55

2.30 (0.67, 7.89)

4.98 (1.218, 20.645)

 Educational status of HHH

Cannot read and write

0.723 (0.256, 2.038)

1–8

0.674 (0.250,01.819)

9–12

1.244 (01.819, 1.819

Tertiary

1

 Night-time outdoor activities of HHH

No

1

1

Yes

2.67(1.50, 4.75)

3.27 (1.602, 6.687)

 Family history of malaria infection

No

1

1

Yes

0.056 (.008, 0.410)

0.02 (0.003, 0.159)

 Household ITN ownership

No

2.958 (1.604, 5.456)

3.62 (1.676, 7.838)

Yes

1

Environmental factors

 Presence of stagnant water around home

No

1

1

Yes

3.93(1.89, 8.17)

4.98 (2.042, 12.178)

 Place of residency

Rural

0.83 (0.41, 1.68)

Semi-urban

1

1

 Altitude of the house (masl)

< 1600

1.489 (0.831, 1.266)

≥ 1600

1