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Table 3 Assessment of the intervention effect using multilevel logistic regression

From: A randomized controlled trial to evaluate the impact of a geo-specific poster compared to a general poster for effecting change in perceived threat and intention to avoid drowning ‘hotspots’ among children of migrant workers: evidence from Ningbo, China

  Do you believe that drowning is a serious health problem in Ningbo city? (Yes) Do you believe that there are lots of drowning-risk waters around you? (Yes) Do you believe that the likelihood of your accessing a drowning-risk water is great? (Yes) Would you intend to avoid accessing to those drowning-risk waters when being exposed? (Yes)
Odds Ratio (95% Confidence Interval)
 Experiment (ref: Control)
  Intervention 0.76 (0.38, 1.51) 0.63 (0.31, 1.28) 0.65 (0.24, 1.74) 1.19 (0.78, 1.84)
    p-value 0.435 0.204 0.391 0.420
 Time (ref: Baseline)
  Follow-up 1.99 (1.24, 3.19) 1.64 (1.01, 2.67) 1.86 (0.99, 3.49) 1.35 (0.93, 1.95)
    p-value 0.005 0.047 0.054 0.112
 Time × Experiment
  Baseline × Intervention 5.41 (2.76, 10.59) 6.60 (3.33, 13.10) 4.89 (2.05, 11.68) 1.42 (0.82, 2.49)
    p-value <0.001 <0.001 <0.001 0.214