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Table 1 Air monitoring sites and schedule per wave

From: A protocol for measuring the impact of a smoke-free housing policy on indoor tobacco smoke exposure

  # of buildings Target # of HHa per bldg Total # of HH # of common areas per bldg Total # of common areas Total # of sites
Month 1 5 Intervention 15 75 4 20 95
  5 Comparison 15 75 4 20 95
Month 2 5 Intervention 15 75 4 20 95
  6 Comparison 15 90 4 24 114
      Total: 399
  1. aHH households