Table 1 Demographic data and clinical features of the subjects ^a(n = 110)

Age (y)

65.7 ± 8.5 (46–88)

Sex (male/female)^b

60 (54.5)/50 (45.5)

History of trauma^b

47 (42.7)

Duration of symptoms (months)

9.9 ± 14.2 (1–60)

 Pain at the initial visit (points)

5.3 ± 2.8 (0–10)

 Most severe pain during the past 4 weeks (points)

7.4 ± 2.6 (0–10)

 Average pain during the past 4 weeks (points)

5.6 ± 2.6 (0–10)