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Table 7 Determinants of malaria transmission dynamics in villages around Lake Tana, Ethiopia, October 2016–June 2017

From: Travel to farms in the lowlands and inadequate malaria information significantly predict malaria in villages around Lake Tana, northwest Ethiopia: a matched case–control study

Variables β Unadjusted mORa p-value β Adjusted mOR (95% CI)b p-value
Age (years) − 0.02 0.98 0.125 − 0.02 0.98 (0.95–1.01) 0.183
Marital status
 Married   1    1  
 Single 0.52 1.68 0.057 0.31 1.37 (0.65–2.87) 0.410
 Divorced/widowed 0.68 1.97 0.101 0.64 1.89 (0.71–5.02) 0.200
Occupation
 Farmer   1    1  
 Non-farmer − 0.20 1.23 0.400 − 0.23 0.79 (0.39–1.60) 0.513
Educational status
 Illiterate   1    1  
 Able to read and write (informal) 0.32 1.38 0.163 0.38 1.46 (0.87–2.44) 0.151
 Grade 1 to 12 completed 0.43 1.54 0.042 0.04 1.04 (0.62–1.73) 0.885
 >12 − 0.33 0.72 0.535 − 0.53 0.59 (0.15–2.30) 0.447
HH wealth index
 Poor   1    1  
 Medium 0.48 1.62 0.197 0.36 1.43 (0.62–3.27) 0.400
 Rich 0.26 1.29 0.162 0.21 1.24 (0.82–1.88) 0.316
Roofing materials
 Corrugated iron   1    1  
 Thatch − 0.56 0.57 0.122 − 0.31 0.73 (0.32–1.68) 0.459
Flooring materials
 Cement and others   1    1  
 Dung plastered − 0.81 0.44 0.177 − 0.83 0.42 (0.11–1.78) 0.248
Travel to malarious lowlands
 No   1    1  
 Yes 2.28 9.75 < 0.0001 1.99 7.32 (2.40–22.34) < 0.0001
Travel history within the study area
 No   1    1  
 Yes 0.45 1.56 0.026 − 0.03 0.97 (0.59–1.58) 0.900
HH member travel to malarious lowlands
 No   1    1  
 Yes 1.35 3.86 0.001 1.01 2.75 (1.02–7.44) 0.046
Received health information on malaria
 No   1    1  
 Yes 0.46 1.59 0.010 0.45 1.57 (1.03–2.41) 0.037
LLIN(s) ownership
 None   1    1  
 1 LLIN/household 0.07 1.07 0.674 0.11 1.12 (0.66–1.90) 0.684
 ≥ 2 LLINs/household 0.63 1.87 0.021 0.59 1.81 (0.95–3.46) 0.071
HH elevation (m)
 1701–1900   1    1  
 1901–2100 0.34 1.40 0.355 − 0.09 0.91 (0.36–2.31) 0.844
 > 2100 1.12 3.06 0.137 0.66 1.94 (0.30–12.49) 0.484
House proximity to health centre (km)
 ≤ 5   1    1  
 > 5 − 0.34 0.71 0.069 − 0.27 0.76 (0.49–1.18) 0.226
House proximity to water body 1 (m)
 < 250   1    1  
 250–500 − 0.52 0.59 0.204 − 0.18 0.84 (0.30–2.32) 0.734
 > 500 − 0.28 0.75 0.459 − 0.03 0.97 (0.38–2.47) 0.950
House proximity to water body 2 (m)
 < 250   1    1  
 250–500 0.44 1.55 0.409 0.59 1.81 (0.50–6.57) 0.365
 > 500 0.14 1.15 0.740 0.39 1.48 (0.51–4.32) 0.475
House proximity to Lake Tana (km)
 < 2   1    1  
 2–4 0.28 1.32 0.552 0.28 1.33 (0.46–3.81) 0.596
 > 4 0.29 1.33 0.399 0.37 1.45 (0.66–3.16) 0.353
  1. β: beta coefficients/regression coefficients. p < 0.05 was considered statistically significant. The italics indicate statistically significant p-values
  2. Unadjusted mOR: Unadjusted matched odds ratio; adjusted mOR: adjusted matched odds ratio; 1: Reference category
  3. aDenotes unadjusted mOR using 95% CI in bivariate conditional logistic regression analysis from matched case–control pairs
  4. bDenotes adjusted mOR using 95% CI in multivariable conditional logistic regression analysis from matched case–control pairs