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Table 1 Demographic information for the low back pain (LBP) group and control group

From: Inter-rater agreement, sensitivity, and specificity of the prone hip extension test and active straight leg raise test

   LBP group Control group
Gender (#) Males 10 20
Females 20 20
Age (years) Mean (SD) 27.7 (5.9) 27.7 (6.1)
Height (cm) Mean (SD) 171.1 (9.8) 173.3 (10.3)
Weight (kg) Mean (SD) 71.0 (16.4) 71.2 (17.7)
LBP duration (months) Mean (SD) 21.2 (35.1) -
Median (range) 6.0 (1–168) -
NPRS (0–10) Mean (SD) 5.0 (1.5) -
Median (range) 5.0 (2–7) -
ODI (0–100) Mean (SD) 16.7 (8.5) -
  Median (range) 14.0 (6-36) -
  1. Abbreviations: NPRS Numerical Pain Rating Scale, ODI Oswestry Disability Index.
  2. In addition to the mean and SD, the median and range are also reported for demographic data that did not demonstrate a normal distribution (LBP duration, NPRS, ODI).
  3. No statistically significant (p < 0.05) between-group differences were noted for gender, age, height, or weight.