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Table 4 Characteristics of study households and participants stratified by study site

From: Associations between urbanicity and malaria at local scales in Uganda

Characteristics Walukuba Kihihi Nagongera
At the household level
 Number of households 100 100 100
 Average altitude (m) 1165 1103 1130
 Electricity in home 22 % 4 % 1 %
 Uses charcoal for cooking 82 % 10 % 0 %
 Density of surrounding householdsa, mean (SD) 225 (152) 19 (32) 7 (6)
 NDVI <0.45 unitsa 66 % 26 % 28 %
 Night-time lights >3 unitsa 29 % 0 % 0 %
 Mean land cover >20 % residential urbana 41 % N/A N/A
 Total number of nights of mosquito collections 2184 2252 2329
 Total number of female Anopheles mosquitoes 2358 10,370 100,890
 Household density of mosquitoes per night (95 % CI) 1.1 (1.0–1.1) 4.6 (4.5–4.7) 43.3 (43.1–43.6)
At the individual cohort participant level
 Number of participants 348 419 400
 Mean age in years during follow-up (children) 5.0 5.6 5.4
 Mean age in years during follow-up (adults) 33.4 38.3 39.0
 Total number of routine blood slides 2613 3376 3231
 Parasite prevalence (95 % CI) 6.1 (5.2–7.1 %) 7.9 (7.0–8.8 %) 22.5 (21.0–23.9 %)
 Person years of observation 606.7 771.8 746.9
 Total episodes of malaria 217 905 1619
 Incidence of malaria per person years (95 % CI) 0.36 (0.31–0.41) 1.17 (1.10–1.25) 2.17 (2.06–2.28)
  1. aWithin 100 m radius of study household