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. 2004 Nov 8;5:38. doi: 10.1186/1471-2474-5-38

Table 1.

Demographic data, sick leave, proportions of symptoms from the neck, shoulder and low back during the 12 months preceding baseline, and proportions of women participating in some intervention.

Study group Ia
n = 443
Study group IIb
n = 274
Age, mean (SD) 45 years
(± 10)
45 years
(± 10)
Symptoms some time during the 12 months before baseline
Neck 59% 57%
Shoulders 66% 65%
Low back 62% 60%
Number of days on sick leave due to any cause 12 months before baseline/6 months before 18-month follow-up, mean (SD) 14 (38)/
12 (31)
Numbers of days on sick leave 12 months before baseline (other reasons than disorders of the neck, shoulder and/or back)/ due to any cause 6 months before 18-month follow-up, mean (SD) 10 (30)/
9 (30)
Duration of employment
0 – 4 years 3% 3%
5 – 10 years 22% 20%
11 – 20 year 47% 43%
>20 years 28% 34%
Proportion of full-time work, mean (SD) 81% (± 17) 81% (± 17)
N:o of persons in household (including the person involved), mean (SD) 2,7 (± 1.3) 2,8 (± 1.3)
Living alone 17% 16%
Participation in intervention
Stress Management group 18% 21%
Individual Physical Training group 16% 18%
Control group 20% 25%

a All participants at baseline. b Participants who at baseline reported no sick leave due to neck, shoulder and/or back disorders during the preceding 12 months and who answered the questionnaire at the 18-month follow-up.