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Table 3 Firth logistic regression results analysing the effect of intervention on mosquito net use in intervention groups in mid-point and end-point surveys

From: The effect of small solar powered ‘Bͻkͻͻ’ net fans on mosquito net use: results from a randomized controlled cross-over trial in southern Ghana

LLIN use night before the survey Intention to treat analysis (n = 354) Per protocol analysis (n = 328)
OR 95% CI OR 95% CI
Group membership
 Group 1 0.29 0.06–1.32 1.06 0.13–8.34
 Group 2 (reference) 1.00   1.00  
Survey
 End of 2nd period 0.16* 0.03–0.74 0.09* 0.01–0.73
 End of 1st period (reference) 1.00   1.00  
Intervention
 Received fans 3.24 0.70–14.92 1.17 0.15–9.22
 Did not receive fans (reference) 1.00   1.00  
Constant 52.82** 11.46–243.42 142.37** 18.11–1119.01
Wald chi2 5.68   5.29  
  1. Group 1 received fans during the first time period; group 2 received the fan console during the second time period (crossover)
  2. * p < 0.05
  3. ** p < 0.01