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Table 2 Continuous risk factors for LBP lasting seven or more consecutive days after one year of follow-up (LBP at t1) in univariate analyses.

From: Physical characteristics of the back are not predictive of low back pain in healthy workers: A prospective study

  Asymptomatic workers Mildly symptomatic workers  
  LBP at t1 No LBP at t1 P-value LBP at t1 No LBP at t1 P-value
  n Median (Q1-Q3) n Median (Q1-Q3)   n Median (Q1-Q3) n Median (Q1-Q3)  
Fingertip-to-floor distance (cm) 34 0.0 (0.0–0.0) 318 0.0 (0.0–5.3) 0.094 52 0.0 (0.0 – 5.5) 283 0.0 (0.0–3.3) 0.524
Difference in excursion of the middle finger on the thigh between lateral flexion to the right and to the left (cm) 34 1.3 (0.5 – 3.0) 318 1.5 (1.0 – 3.0) 0.818 52 1.0 (0.0 – 2.0) 283 2.0 (0.5 – 3.0) 0.003
Difference between the range in straight-leg-raising right -left (degrees) 32 5.0 (0.0 – 10.0) 318 5.0 (0.0 – 5.0) 0.259 52 5.0 (0.0 – 5.0) 278 5.0 (0.0 – 5.0) 0.146
Difference between the range of the hamstring muscles right – left (degrees) 31 0.0 (0.0 – 0.0) 311 0.0 (0.0 – 5.0) 0.440 52 0.0 (0.0 – 5.0) 270 0.0 (0.0 – 5.0) 0.799
  1. P-value calculated with Mann Whitney U tests