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Table 1 Baseline characteristics

From: Predictive ability of the start back tool: an ancillary analysis of a low back pain trial from Danish general practice

Patient characteristics STarT low-risk N = 124 STarT medium-risk N = 176 STarT high-risk N = 141 P-value
Age (years) 46.8 (11.6) 45.2 (11.4) 43.7 (11.0) 0.029*
Gender (male) 63 (50.8%) 81 (46.0%) 66 (46.8%) 0.705
College-level education (yes) 41 (33.6%) 46 (26.6%) 17 (12.4%) < 0.001
Employed (yes) 94 (76.4%) 136 (78.2%) 94 (68.6%) 0.144
Sick leave with LBP, hours during 14 days 0 [0; 8] 4.5 [0; 18.5] 18 [2; 40] < 0.001ǂ
RMDQ score (0–23 points) 8.7 (4.9) 14.0 (4.7) 17.3 (4.2) < 0.001*
Numerical pain rating (0–10 points) 4.6 (2.1) 6.3 (2.0) 7.2 (1.7) < 0.001*
EQ VAS (0–100 points) 64.4 (20.9) 57.5 (20.3) 43.7 (21.8) < 0.001*
  1. Note: STarT Back Tool is a patient-reported nine-item questionnaire, which subgroups patients according to risk of complexity and persistent symptoms. *Comparing the low-risk group and the high-risk group and tested by Student’s T-test. Comparing all groups by Fischer’s Exact test. ǂComparing the low-risk group and the high-risk group and tested by the Mann-Whitney test. Data are mean (sd), number (%), or median [iqr]. The numbers of missing values were as follows: education n = 9, employment status n = 7, sick leave n = 68, numerical pain rating n = 12, and EQ VAS n = 6