Table 1.

Baseline demographic factors.

Baseline factor	Result
Age (years)	53.3 (49.4–57.1)
Sex
Female	16 (43.2%)
Male	21 (56.8%)
BMI (kg/m2)	27.3 (25.6–29.1)
Laterality
Left	16 (43.2%)
Right	21 (56.8%)
Pain duration
<3 months	25 (67.6%)
3–6 months	5 (13.5%)
6–12 months	4 (10.8%)
>12 months	3 (8.1%)
Baseline pain severity	41.5 (32.5–50.5)

Data presented as mean (95% confidence interval) or n (%).

BMI = body mass index.