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Table 5 Stratified analysis by HH elevation for predictors of malaria 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 COR [1750–2000 m] [2000–2500 m] Adjusted (Mantel–Haenszel)
OR OR ORMH 95% CI X2MH p value
Age 1 0.97 2.5 1.01 0.73–1.40 0.97 0.3237
Marital status 1.62 1.69 1.5 1.68 1.10–2.56 0.02 0.8792
Occupation 1.19 1.22 0.79 1.19 0.77–1.84 0.17 0.6762
Educational status 1.34 1.31 5.45 1.36 0.98–1.88 1.5 0.2205
HH size 1.1 1.08 1.75 1.1 0.80–1.52 0.35 0.5523
HH wealth index 1.29 1.29 1.24 1.29 0.91–1.82 0 0.9629
Roofing materials 0.62 0.6 1.25 0.62 0.32–1.19 0.24 0.6233
Open eaves in the roof 0.86 0.79 3.11 0.87 0.54–1.40 1.96 0.1615
Number of rooms 1.11 1.17 0.3 1.09 0.78–1.52 2.65 0.1035
Separate kitchen 1.09 1.13 0.7 1.1 0.79–1.53 0.36 0.5464
Tethering of cattle, goats and sheep 1.08 1.09 0.98 1.08 0.74–1.58 0.02 0.8995
Travel history to malarious lowlands 2.81 3.3 0.98 2.91 1.73–4.90 2.14 0.1436
Travel history within the study area 1.47 1.52 1.17 1.49 1.04–2.15 0.11 0.737
Visiting traditional healers 0.84 0.88 0.57 0.85 0.57–1.28 0.27 0.6019
HMM 1.14 1.15 1.38 1.17 0.70–1.94 0.05 0.8304
Received health education on malaria 1.54 1.55 1.43 1.55 1.10–2.17 0.01 0.9153
LLIN ownership 1.26 1.28 0.9 1.26 0.89–1.78 0.15 0.6984
IRS 0.98 0.95 0 0.94 0.63–1.39 0.77 0.3805
House proximity to health centre 0.71 0.7 1.11 0.71 0.49–1.04 0.26 0.6089
House proximity to water body 1 0.71 0.79 0.32 0.68 0.33–1.43 0.7 0.4024
House proximity to water body 2 1.21 1.13 1.71 1.19 0.50–2.81 0.09 0.7623
  1. ORMH adjusted odds ratio using Mantel–Haenszel method, COR crude odds ratio, X2MH Mantel–Haenszel Chi square value