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Table 2 Base-line description of 984 patients.

From: The Nordic back pain subpopulation program: predicting outcome among chiropractic patients in Finland

Variable Subgroups Frequency Percentage
Sex Men 506 52
  Women 471 48
  Not stated 7 < 1
Age 0–20 43 4
  21–50 586 60
  ≥ 50 355 36
LBP Yes 961 98
  No 23 2
Leg pain Yes 461 47
  No 523 53
Pain intensity at baseline None 16 2
  Mild 183 19
  Moderate 443 45
  Severe 281 29
  Unbearable 59 6
Days with pain at baseline Max 2 wks 363 37
  > 2 wks 621 63
Constant pain past year Yes 637 65
  No 347 35
Days with pain past yr < 30 days 437 44
  ≥ 30 days 547 56
Pain turning in bed Yes 515 53
  No 452 47
Pain when sleeping Yes 397 41
  No 570 59
Pain putting on socks/shoes Yes 639 66
  No 334 34
Pain in walking Yes 527 54
  No 443 46
Pain getting up from sitting Yes 686 70
  No 290 30
Number of disabilities 0 76 8
  1 141 15
  2 191 20
  3 192 20
  4 178 19
  5 174 18
General health Excellent/good 924 94
  Less than good 54 6
Pain in neck and/or mid-back past year No 444 45
  Yes < 30 days 281 29
  Yes ≥ 30 days 247 25
Body mass index Underweight/Normal weight 455 47
  Overweigh/obese 512 53
Better directly after treatment Yes 635 67
  No 317 33