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Table 3 Baseline characteristics of the sample

From: How can latent trajectories of back pain be translated into defined subgroups?

  General practice sample (n = 263) Chiropractic sample (n = 814) Excluded (n = 163)
Female (%) 57% 45% 47%
Age, mean (sd) 45 (11) 43 (11) 44 (13)
Episode duration (%)
 0–2 weeks 39% 63% 55%
 2–4 weeks 14% 14% 11%
 1–3 months 16% 11% 11%
  > 3 months 32% 13% 23%
LBP intensity at baseline (NRS 0–10), median (IQR) 7 (6–8) 7 (5–8) 7 (6–9)
Leg pain intensity at baseline (NRS 0–10), median (IQR) 3 (0–6) 2 (0–4) 2 (0–6)
Previous LBP episodes
 0 15% 16% 18%
 1–2 24% 35% 30%
 3 or more 61% 49% 52%
RMDQ (0–100), median (IQR) 61 (39–78) 52 (35–70) 61 (39–78)
  1. IQR, Interquartile range, RMDQ Roland Morris Disability Questionnaire score (0 = no disability; 100 = complete disability). NRS Numeric Rating Scale