Table 1 Unadjusted and adjusted incidence risk ratios using multilevel negative binomial regression
Variable | Unadjusted | Adjusted for level | ||||||
|---|---|---|---|---|---|---|---|---|
IRR | P value | 95% CI | IRR | P value | 95% CI | |||
Intervention arms | ||||||||
IRS + ITN | 1.09 | 0.352 | 0.91 | 1.29 | 0.63 | < 0.001 | 0.52 | 0.76 |
ITN | 1.01 | 0.919 | 0.84 | 1.21 | 0.78 | 0.011 | 0.65 | 0.95 |
IRS | 1.05 | 0.574 | 0.88 | 1.25 | 0.90 | 0.280 | 0.75 | 1.09 |
Routine | 1.00 | 1.00 | ||||||
Age group | ||||||||
Under 5 years | 1.30 | 0.001 | 1.11 | 1.52 | 3.19 | 0.001 | 1.11 | 1.52 |
6–14 years | 1.04 | 0.631 | 0.90 | 1.20 | 0.52 | 0.602 | 0.90 | 1.20 |
Above 15 years | 1.00 | 1.00 | ||||||
Sex | ||||||||
Male | 1.01 | 0.831 | 0.90 | 1.15 | 1.02 | 0.765 | 0.90 | 1.15 |
Female | 1.00 | 1.00 | ||||||
Wealth index | ||||||||
Poor | 1.18 | 0.042 | 1.01 | 1.38 | 1.25 | 0.015 | 1.04 | 1.49 |
Middle | 1.11 | 0.198 | 0.95 | 1.29 | 1.12 | 0.158 | 0.96 | 1.31 |
Better wealth | 1.00 | 1.00 | ||||||
Education head of household | ||||||||
Illiterate | 1.06 | 0.657 | 0.83 | 1.35 | 1.05 | 0.720 | 0.82 | 1.34 |
Read and write | 1.50 | 0.005 | 1.13 | 2.00 | 1.34 | 0.043 | 1.01 | 1.78 |
Primary education | 1.23 | 0.118 | 0.95 | 1.59 | 1.14 | 0.314 | 0.88 | 1.48 |
Secondary education | 1.00 | 1.00 | ||||||
Constant | 0.03 | 0.02 | 0.03 | 0.01 | 0.001 | 0.02 | 0.05 | |
lnalpha/ | 1.75 | 1.53 | 1.96 | 1.11 | 0.86 | 1.36 | ||
Kebele (var_cons) | 0.46 | 0.13 | 1.61 | |||||
Kebele > Dist_Rec | 0.35 | 0.11 | 1.09 | |||||