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Table 3 Analysis of covariance for primary outcome of change in intention

From: Looking inside the black box: results of a theory-based process evaluation exploring the results of a randomized controlled trial of printed educational messages to increase primary care physicians’ diabetic retinopathy referrals [Trial registration number ISRCTN72772651]

  95% CI
TPB Construct Source df F p B Lower Upper
Intention Covariate       
Intention Pre-intervention 1 71.05 0.000 0.401 0.308 0.495
Main Effects       
Insert 1 2.25 0.135 -0.172 -0.398 0.054
Outsert 1 0.53 0.469 0.102 -0.174 0.377
Reminder Note 1 0.04 0.838 -0.029 -0.305 0.248