Table 1.
Characteristics of participants with and without chronic low back pain (CLBP) [Median (interquartile range)].
| Characteristics | CLBP(n = 78) | Asymptomatic (n = 73) | Young (18–44 years) | Middle-aged (45–65 years) | ||
|---|---|---|---|---|---|---|
| CLBP (n = 33) | Asymptomatic (n = 31) | CLBP (n = 45) | Asymptomatic (n = 42) | |||
| Age (year) | 46.0 (35.8–54.0) | 48.0 (30.0–54.5) | 34.0* (29.0–37.0) | 29.0* (23.0–34.0) | 53.0 (48.5–57.5) | 53.5 (45.0–64.0) |
| BMI (kg/m) | 23.0 (21.0–25.0) | 22.0 (20.0–24.0) | 22.0 (20.0–25.0) | 21.9 (20.0–23.0) | 23.0 (21.0–25.5) | 22.7 (20.7–25.0) |
| Gender (male %) | 41.0% (32) | 36.6% (26) | 48.4% (16) | 36.6% (11) | 35.5% (16) | 36.5% (15) |
| RMDQ | 5.5* (3.0–9.0) | 0.0* (0.0–1.0) | 3.7* (2.7–5.0) | 0.0* (0.0–1.0) | 6.5* (4.3–9.8) | 0.0* (0.0–1.0) |
| FABQ (0–96) | 44.0* (27.0–53.0) | 0.0* (0.0–22.0) | 34.5* (25.0–51.8) | 0.0* (0.0–21.8) | 46.5* (31.5–56.8) | 0.0* (0.0–26.0) |
| FABQPA (0–24) | 18.0* (14.0–22.0) | 0.0* (0.0–11.3) | 20.0* (15.0–21.0) | 0.0* (0.0–10.8) | 18.0* (14.3–23.0) | 0.0* (0.0–12.0) |
| FABQW (0–42) | 22.0* (10.0–27.0) | 0.0* (0.0–8.0) | 19.0* (8.0–29.0) | 0.0* (0.0–8.0) | 27.0* (18.0–37.0) | 0.0* (0.0–4.5) |
| Average pain intensity on NPRS (0–10) | 4.2* (3.0–5.6) | 0.0* (0.0–0.0) | 3.7* (2.7–3.7) | 0.0* (0.0–0.3) | 4.5* (3.4–5.9) | 0.0* (0.0–0.0) |
| Current pain intensity on NPRS (0–10) | 4.0* (3.0–6.0) | 0.0* (0.0–0.1) | 3.5* (3.0–5.0) | 0.0* (0.0–0.6) | 5.0* (3.3–6.0) | 0.0* (0.0–0.0) |
Calculation of p-values was performed using Mann-Whitney U test (for continuous variables) and chi-square test (for nominal variable). BMI, body mass index; CLBP, chronic low back pain; FABQ, fear avoidance beliefs questionnaire; FABQPA, fear avoidance beliefs questionnaire physical activity; FABQW, fear avoidance beliefs questionnaire work; NPRS, numeric pain rating scale; RMDQ, Roland Morris Disability Questionnaire.
*
p < 0.05 for comparisons between participants with and without CLBP.