Table 1

General practice and general practitioner baseline characteristics

Participated in patient recruitment and posted questionnaire

Dropped out of CRT prior to patient recruitment


Practice factors at baseline

N practices

N practices

Number of practices

81

11

Number of GPs per practice (SD)

81

5 (3.8)

11

6 (4.1)

No. (%) rural practices

81

29 (36)

11

2 (18)

No. (%) with x-ray facility on site

80

3 (4)

9

1 (11)

No. (%) of industrial practices

81

7 (9)

9

0 (0)

No. (%) of training practices

80

51 (64)

9

6 (67)

Method of billing:

76

9

No. (%) Bulk bill

12 (16)

1 (11)

No. (%) Co-payment

64 (84)

8 (89)

GP factors at baseline

N GPs

N GPs

Number

94

18

Mean age (years) (SD)

93

54 (10.3)

8

55 (14.1)

No. (%) female

93

33 (35)

10

4 (40)

Mean number of years since graduated (SD)

93

30 (10.2)

8

31 (14.5)

No. (%) with special interest in low-back pain

93

16 (17)

8

0 (0)

No. (%) undertaken LBP continuing education in past year

92

10 (11)

8

1 (12)

Mean number of patients seen per week (SD)

92

126 (55.4)

8

129 (61.6)

Mean number of LBP patients seen per week (SD) (averaged over the previous month) [Median; IQR]

90

12 (17.7) [8; 4 to 10]

8

11 (5.4) [10; 9 to 12]

No. (%) who are members of local GP Division

93

87 (93)

8

7 (87)


CRT = Cluster randomised trial; SD = standard deviation; GPs = general practitioners; IQR = Interquartile range [25th percentile - 75th percentile]

Page et al. BMC Medical Research Methodology 2011 11:35   doi:10.1186/1471-2288-11-35

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