|
Cross-tabulation of the independent baseline-variables (n = 9,600). Percentages calculated across rows (i.e. within diagnostic subgroups). |
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| n (% of total sample) |
LBP |
LBP-long |
Headache |
Headache-long |
Asthma |
|
|
|||||
| LBP-all 3,223 (34%) |
588 (18%) |
2,974 (92%) |
334 (10%) |
1,244 (39%) |
|
| LBP-long 588 (6%) |
588 (100%) |
559 (95%) |
134 (23%) |
287 (49%) |
|
| Headache-all 8,266 (86%) |
2,974 (36%) |
559 (7%) |
591 (7%) |
2,446 (30%) |
|
| Headache-long 591 (6%) |
334 (57%) |
134 (23%) |
591 (100%) |
269 (46%) |
|
| Asthma 2,685 (28%) |
1,244 (46%) |
287 (11%) |
2,446 (91%) |
269 (10%) |
|
Hestbaek et al. BMC Musculoskeletal Disorders 2006 7:29 doi:10.1186/1471-2474-7-29 |
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