Table 1

Clinical and Demographic Characteristics of Participants.

Whole sample

(n = 167)

Online then paper

(n = 76)a

Paper then online

(n = 83)


    Gender


Male

60 (35.9%)

23 (30.3%)

35 (42.2%)


Female

90 (53.9%)

43 (56.6%)

42 (50.6%)


Missing data

17 (10.2%)

10 (13.2%)

6 (7.2%)


    Age


Mean

Range

46.28

18 to 78

44.79

19 to 74

46.66

18 to 78


Missing data (n, %)

48 (28.7%)

19 (25%)

27 (32.5%)


    Duration of back pain (yrs)


Mean

Range

9.25

0.02 to 50

8.68

0.04 to 40

9.36

0.02 to 37


Missing data (n, %)

49 (29.3%)

20 (26.3%)

27 (32.5%)


    Employment status


Unemployed

1 (0.6%)

1 (1.3%)

0 (0.0%)


Retired

24 (14.4%)

10 (13.2%)

12 (14.5%)


Employed

66 (39.5%)

30 (39.5%)

32 (38.6%)


In education

16 (9.6%)

9 (11.8%)

7 (8.4%)


Unable to work due to back pain

1 (0.6%)

0 (0.0%)

1 (1.2%)


Other

7 (4.2%)

3 (3.9%)

4 (4.8%)


Missing data (n, %)

52 (31.1%)

23 (30.3%)

27 (32.5%)


a 8 participants did not confirm the order in which they completed the questionnaires and so are excluded from order of completion analyses.

Bishop et al. BMC Musculoskeletal Disorders 2010 11:113   doi:10.1186/1471-2474-11-113

Open Data