Skip to main content

Advertisement

Table 5 Per-protocol analysis of change in test ordering rates for each topic

From: Effect of audit and feedback with peer review on general practitioners’ prescribing and test ordering performance: a cluster-randomized controlled trial

  Intervention control     
Clinical topic n Mean before (SD) Mean after (SD) n Mean before (SD) Mean after (SD) Ba (95% CI) icc Direction p
Anaemia 35 176.8 (172.2) 209.4 (174.6) 53 199.6 (146.3) 232.5 (177.7) −9.1 (−96.1, 77.9) 0.60 0.829
Rheumatic complaints 39 13.3 (22.9) 11.6 (20.7) 49 12.9 (16.2) 14.9 (27.5) 3.2 (−8.1, 14.6) 0.55 0.551b
Prostate complaints 26 34.7 (24.6) 30.4 (29.3) 62 39.1 (27.4) 41.8 (29.5) 6.9 (−0.7, 14.6) 0.07 0.072
Chlamydia infections 30 11.4 (21.5) 14.7 (23.3) 58 7.4 (8.8) 5.8 (9.5) −5.7 (−12.0, 0.5) 0.40 0.069b
Thyroid dysfunction 29 204.8 (159.9) 191.3 (135.4) 59 163.3 (153.2) 191.7 (152.8) 36.6 (10.5, 62.7) 0.00 0.007
Perimenopausal complaints 24 5.7 (5.5) 3.8 (3.5) 64 6.1 (6.7) 7.3 (8.0) 3.2 (0.1, 6.4) 0.10 0.046b
  1. The desired direction of change is given in the column headed ‘direction’. Numbers represent the number of tests prescribed per 6 months per 1000 patients
  2. n = number of practices
  3. aAdjusted difference between groups at end of intervention, corrected for baseline
  4. bStatistically significant interaction
  5. Rheumatic complaints
  6. P10: B (95% CI):−3.0 (−13.9, 8.0). p: 0.560
  7. P90: B (95% CI): 14.8 (2.1, 27.4). p: 0.025
  8. Chlamydia infections
  9. P10: B (95% CI):−2.3 (−9.0, 4.4) p: 0.482
  10. P90: B (95% CI):−10.4 (−17.6,−3.3) p: 0.006
  11. Perimenopausal complaints
  12. P10: B (95% CI): 0.7 (−3.0, 4.5). p: 0.696
  13. P90: B (95% CI): 6.6 (2.4, 10.7). p: 0.002