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Table 2 Factors associated with uncomplicated clinical malaria, Djougou–Copargo–Ouake health district

From: Effectiveness of insecticidal nets on uncomplicated clinical malaria: a case–control study for operational evaluation

Variables N case N control Crude OR (95 % CI) p value
Information about children
Sleeping every night under an LLIN for the 2 weeks before the survey
 Sometimes or never 243 518 1  
 Every night 198 673 0.63 (0.50–0.78) 0.0001
Age group (month)
 24–60 293 366 1  
 0–23 148 825 0.22 (0.18–0.28) <0.0001
Sex
 Male 226 637 1  
 Female 215 554 1.09 (0.88–1.36) 0.4227
Use of drugs perceive to be prophylactic treatment against malaria
 No 300 871 1  
 Yes 141 320 1.28 (1.01–1.62) 0.0418
Hour of sleeping last night     0.2891
 At night fall 135 393 1  
 Between night fall and 10 p.m. 243 660 1.07 (0.84–1.37) 0.1169
 After 10 p.m. 63 138 1.33 (0.93–1.90) 0.5796
Use other anti-mosquito measures
 Never 326 890 1  
 Every day or sometimes 115 301 1.04 (0.81–1.34) 0.7401
Information about mosquito net
Age (year)
 >3 86 178 1  
 ≤3 355 1013 0.73 (0.55–0.96) 0.0269
Number of times washed since obtained
 >20 69 200 1  
 ≤20 372 991 1.09 (0.81–1.47) 0.5804
Holes
 No 143 360 1  
 Yes 298 831 0.90 (0.72–1.14) 0.3893
Information about mother or guardian
Age (year)     <0.0001
 <25 98 367 0.83 (0.63–1.10) 0.1969
 25–35 181 564 1  
 >35 162 260 1.94 (1.50–2.52) <0.0001
Primary school at least
 No 342 842 1  
 Yes 99 349 0.70 (0.54–0.90) 0.0059
Profit-making activity     0.6851
 Farming/breeding/fishing/handicraft 187 489 1  
 Employee status/shopkeeper 156 413 1.13 (0.85–1.50) 0.4058
 No activity 98 289 1.11 (0.83–1.49) 0.4719
Number of children in the household     0.1303
 1 75 265 1  
 2 93 232 1.42 (0.99–2.01) 0.0527
 3 95 229 1.47 (1.03–2.08) 0.0328
 ≥4 178 465 1.35 (0.99–1.84) 0.0554
Knows mosquitoes transmit malaria
 No 131 304 1  
 Yes 310 887 0.75 (0.58–0.96) 0.0246
Knows mosquito net protection against malaria
 No 121 263 1  
 Yes 320 928 0.81 (0.64–1.03) 0.0910
  1. Factors associated with uncomplicated clinical malaria were grouped into information (in italic text) about (i) children aged 0–60 months, (ii) mosquito net, and (iii) mother or guardian of children characteristics. Univariate conditional logistic regression taking into account cluster effect was used