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Table 5 Post hoc analyses of patient attitudes by receipt of CRP or booklet

From: Evaluation of a web-based intervention to reduce antibiotic prescribing for LRTI in six European countries: quantitative process analysis of the GRACE/INTRO randomised controlled trial

  Group allocation Receipt of CRP test Group allocation Receipt of booklet
  CRP group (n=1228) Not CRP group (n=1092) Effect sizea CRP test (n=884) No CRP test (n=1473) Effect size Booklet group (n=1303) Not (n=1017) Effect size Booklet (n=1453) No booklet (n=856) Effect size
  Mean (s.d.) Mean (s.d.) Cohen’s d Mean (s.d.) Mean (s.d.) Cohen’s d Mean (s.d.) Mean (s.d.) Cohen’s d Mean (s.d.) Mean (s.d.) Cohen’s d
Antibiotics necessary 3.79 (1.17) 4.07 (1.78) .19*** 3.90 (1.72) 3.94 (1.77) .02 3.93 (1.76) 3.91 (1.73) .01 3.87 (1.77) 3.99 (1.72) .07*
Antibiotics harmful 4.12 (1.46) 4.03 (1.48) .06 4.04 (1.45) 4.11 (1.47) .05 4.12 (1.48) 4.04 (1.45) .05 4.18 (1.48) 3.92 (1.45) .18***
Patient enablement 5.06 (1.06) 5.16 (0.98) -.10* 5.05 (1.05) 5.15 (1.02) -.14** 5.15 (1.01) 5.05 (1.04) .10** 5.17 (1.01) 5.00 (1.06) .16**
Consultation satisfaction 5.84 (0.92) 5.91 (0.97) .07 5.82 (0.94) 5.91 (0.87) -.10* 5.93 (0.85) 5.81 (0.95) .13*** 5.92 (0.87) 5.79 (0.94) .14***
  1. *p < .05, **p < .01, ***p < .001 for between group differences (independent samples t-test).
  2. aEffect size (d) reported such that positive value represents positive intervention effect.