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Table 1

Return to:   Evidence-based Classification Of Low Back Pain In The General Population

Baseline description of the study subjects consisting of 50-yr olds from the general Danish population who participated in the baseline study (N = 412) and those participating in the present SMS-Track survey (N = 261)

Variables of interestFirst survey 10 yrs prior to present study
Present SMS-Track survey
N (%)N (%)
Proportion women
213 (52)
142 (54)
Employment status
 
 
 Self employed
29 (7)
18 (7)
 Assisting spouse
2 (0)
0 (0)
 Employed
344 (84)
230 (88)
 Unemployed
17 (4)
7 (3)
 Pensioner
11 (3)
2 (1)
 Others outside labor force
9 (2)
4 (2)
Highest educational level
 
 
 Basic school
92 (22)
49 (19)
 General upper-secondary education
9 (2)
6 (2)
 Vocational education/training
127 (31)
86 (33)
 Short-cycle higher education
84 (20)
56 (21)
 Medium-cycle higher education
77 (19)
50 (19)
 Long-cycle higher education
23 (6)
15 (5)
 Reported having had low back pain past year
284 (69)
170 (65)
Number of days with low back pain the year preceding study
 
 
0 days
123 (30)
86 (33)
1–30 days
187 (45)
121 (46)
>30 days
102 (25)
54 (21)
Reported having been on sick-leave preceding year because of low back pain
 
 
0 days
329 (80)
201 (77)
1–30 days
61 (15)
51 (20)
>30 days22 (5)9 (3)
Information obtained from a Danish general population of 50-yr olds, who in the last survey were followed with fortnightly text-messages over one year.