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Table 2 Baseline characteristics of participating and non-participating GPs

From: GPs’ role security and therapeutic commitment in managing alcohol problems: a randomised controlled trial of a tailored improvement programme

Characteristic Intervention (N = 59) Control (N = 53) Non-participants (N = 761)
Male gender 39 (66%) 31 (58.5%) 478 (65.4%)#
Mean age at start of study (SD) 45 (6.9)# 49 (7.7)# 48.1 (8.0)
Mean FTE (SD) 0.84 (0.2) 0.97 (1.2) 0.83 (0.56)
Mean size of patient population (SD) 2158 (627) 2179 (730) 2153 (689)
Working area
Rural 18 (31%) 14 (26%) 148 (20%)
Urbanised rural 23 (39%) 16 (57%) 306 (41%)
Urban 3 (5%) 10 (19%) 142 (19%)
Big city 15 (25%) 13 (25%) 145 (20%)
Practice type
Solo 20 (34%) 24 (45%) 193 (26%)#
Duo 23 (39%) 22 (42%) 216 (29%)#
Group 10 (17%) 5 (9%) 213 (29%)#
Health Centre 6 (10%) 2 (4%) 79 (11%)#
Other    42 (6%)#
Average hours of training in alcohol problems before start of study (SD) 0.51 (1.1) 0.36 (0.97) n.m.
Role security ¥ : total (SD)* 5.0 (0.91) 5.1 (0.76) 5.2 (0.82)
Role adequacy 4.4 (1.06) 4.4 (1.12) 4.6 (1.05)
Role legitimacy 5.6 (1.20) 5.7 (1.04) 5.7 (1.07)
Therapeutic commitment ± : total (SD)* 3.9 (0.92) 3.9 (0.74) 3.9 (0.76)
Task-specific self-esteem 3.9 (1.14) 3.7 (1.22) 4.0 (1.11)
Work satisfaction 3.3 (1.32) 3.5 (1.20) 3.6 (0.88)
Motivation 4.5 (1.06) 4.5 (1.01) 4.2 (1.10)
  1. #Significant difference (p < 0.05) compared to participating GPs; n.m. = not measured; ¥ = Role security is calculated by the average of role adequacy and role legitimacy; ±Therapeutic commitment is calculated by the average of task-specific self-esteem, work satisfaction and motivation; *minimal role security = 1 and maximum role security = 7.