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Table 3 Analysis of changes in proportions in questionnaire responses for primary outcomes

From: Evaluation of a tailored, multi-component intervention for implementation of evidence-based clinical practice guidelines in primary care physical therapy: a non-randomized controlled trial

Outcome Intervention group Control group Comparison
  Pre (n = 171) Post (n = 168) Absolute change P value Pre (n = 100) Post (n = 88) Absolute change P value Absolute diff. z P value
Awareness that guidelines exist (yes) 31.0% 58.9% 27.9% p < 0.001 37.0% 44.3% 7.3% ns 20.6% 2.281 0.023
Knowledge of where to find guidelines (yes) 14.7% 39.9% 25.2% p < 0.001 11.1% 15.9% 4.8% ns 20.4% 2.689 0.007
Easy access to guidelines (yes) 8.2% 25.6% 17.4% p < 0.001 11.1% 6.8% −4.3% ns 21.7% 3.422 <0.001
Use of guidelines (frequently or almost always) 46.2% 55.4% 9.2% p = 0.091 48.0% 47.8% −0.2% ns 9.4% 1.031 0.302
  1. Absolute diff = difference between groups in change in proportions pre to post intervention.
  2. Significant differences are in bold type.