Table 1. Clinical characteristics of subjects with chronic pain (N = 1831)^*.

Clinical Characteristics	N (%)
Site of Pain
Extremities	644 (34.1)
Whole body	410 (21.7)
Back	346 (18.3)
Head and Neck	236 (12.5)
Multiple sites	138 (7.3)
Abdomen	67 (3.5)
Duration of pain
6–12 Months	711 (37.6)
1–2 Years	549 (29)
2–5 Years	236 (12.5)
5–10 Years	211 (11.2)
>10 Years	102 (5.4)
Frequency of pain
Daily	963 (51)
Few days a week	489 (25.9)
Once in a week	183 (9.7)
Monthly	181 (9.6)
Intensity of pain
Mild	619 (32.8)
Moderate	809 (42.8)
Severe	390 (20.6)

* Missing responses were excluded from analyses, so samples sizes do not add to 1831 for a few characteristics.