Table 3

ORs from models estimating household participation (receipt of insecticide treatment) during Cycle 2 of Chagas disease vector control campaign, Arequipa, Peru, 2015, by treatment arm and analytic sample

Outcome: household treated, Cycle 2Intent-to-treat aOR (95% CI)Per protocol aOR(95% CI)
Study arm (ref: control)
  Advanced planning1.07 (0.87 to 1.32)1.15 (0.78 to 1.69)
  Block leader recruitment0.95 (0.78 to 1.15)0.99 (0.72 to 1.37)
  Contingent group lottery1.12 (0.89 to 1.39)1.04 (0.76 to 1.42)
Cycle 1 household status (ref: closed)
  Cycle 1: sprayed, positive8.85 (4.43 to 17.70)12.86 (4.13 to 40.06)
  Cycle 1: sprayed, negative4.49 (3.33 to 6.06)3.87 (2.65 to 5.66)
  Cycle 1: uninhabited2.19 (1.33 to 3.62)8.10 (1.19 to 55.28)
  Cycle 1: refused1.48 (0.36 to 6.09)1.45 (0.31 to 6.83)
  Cycle 1: public lot0.10 (0.02 to 0.45)0.03 (0.01 to 0.12)
  Cycle 1: vacant lot0.79 (0.57 to 1.10)0.55 (0.35 to 0.87)
Constant1.54 (1.13 to 2.10)3.84 (2.72 to 5.43)
n (households)49224418
  • Adjusted ORs (aOR) from logistic regressions of the odds of households being treated (sprayed with insecticide) during Cycle 2 of the Chagas disease vector control campaign in Arequipa, Peru. Regression models are estimated using generalised estimating equations with robust SEs. CIs are adjusted for clustering of households within clusters. All covariates included in the model are shown in the table above.