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Table 1 Study scheme for timing and visits of interventions, Honduras, August 2015 – May 2018

From: Study protocol for a stepped-wedge randomized cookstove intervention in rural Honduras: household air pollution and cardiometabolic health

Stepped-wedge randomized controlled trial
Timing of study visits for data collection Arm 1 (n=115)
Stove type
Arm 2 (n=115)
Stove Type
Visit 1: Aug – Dec 2015 Traditional Traditional
Visit 2: Jan – May 2016 Traditional Traditional
  Arm 1 receives intervention  
Visit 3: Sep – Dec 2016 Justa Traditional
Visit 4: Feb – May 2017 Justa Traditional
   Arm 2 receives intervention
Visit 5: Sep – Dec 2017 Justa Justa
Visit 6: Feb – May 2018 Justa Justa