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Table 1 Demographics of patients. Characteristics of GPs participating in the study and included patients

From: Clinical decision support improves the appropriateness of laboratory test ordering in primary care without increasing diagnostic error: the ELMO cluster randomized trial

  CDSS arm Control arm Total
Number of GPs 135 (49.63%) 137 (50.37%) 272
 Age (mean years, SD) 41 (13.59) 41 (13.27)  
 Experience (mean years, SD) 14 (18.81) 15 (19.40)  
 % Female 65.00 62.14  
Number of practices per lab 36 (50.00%) 36 (50.00%) 72
 Laboratory 1 19 (52.78%) 20 (55.56%) 39
 Laboratory 2 5 (13.89%) 3 (8.33%) 8
 Laboratory 3 12 (33.33%) 13 (36.31%) 25
Number patients 5124 (52.92%) 4559 (47.08%) 9683
 Age (years, SD) 58.33 (17.04) 54.34 (17.61) 56.45 (17.42)
 Female sex (N, %) 2774 (54.00%) 2578 (56.00%) 5352 (55.10%)
Total number of panels (N, %) 5495 (53.51%) 4775 (46.49%) 10,270
Number of panels per indication (N, %)a
 Check-up 1722 (31.34%) 1936 (40.54%) 3658 (35.62%)
 Cardiovascular disease management 1381 (25.13%) 585 (12.25%) 1966 (19.14%)
 Hypertension 889 (16.18%) 478 (10.01%) 1367 (13.31%)
 Chronic kidney disease 587 (10.68%) 168 (3.52%) 755 (7.35%)
 Type 2 diabetes 2160 (39.31%) 953 (19.96%) 3113 (30.31%)
 Thyroid disease 1164 (21.18%) 576 (12.06%) 1740 (16.94%)
 Sexually transmitted infections 248 (4.51%) 336 (7.04%) 584 (5.69%)
 Chronic diarrhea 23 (0.42%) 42 (0.88%) 65 (0.63%)
 Acute diarrhea 12 (0.22%) 19 (0.40%) 31 (0.30%)
 Acute coronary syndrome 34 (0.62%) 21 (0.44%) 55 (0.54%)
 Lung embolism 22 (0.40%) 15 (0.31%) 37 (0.36%)
 Rheumatoid arthritis 126 (2.29%) 105 (2.20%) 231 (2.25%)
 Medication follow-up 798 (14.52%) 374 (7.83%) 1172 (11.41%)
 Gout 170 (3.09%) 39 (0.82%) 209 (2.04%)
 Liver disease 416 (7.57%) 157 (3.29%) 573 (5.58%)
 Anemia 728 (13.25%) 395 (8.27%) 1123 (10.93%)
 Fatigue 606 (11.03%) 520 (10.89%) 1126 (10.96%)
 Other 434 (7.90%) 621 (13.01%) 1055 (10.27%)
  1. GP general practitioner, CDSS clinical decision support system, SD standard deviation
  2. aThe percentages reported for the individual indications use the total number of panels as denominator