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. Author manuscript; available in PMC: 2013 May 31.
Published in final edited form as: Pain Pract. 2012 Jul 2;13(3):215–226. doi: 10.1111/j.1533-2500.2012.00573.x

TABLE 2.

CHARACTERISTICS OF THE STUDY PARTICIPANTS

Item Younger (20–35) Middle (40–55) Older (70–90) Overall
Age 62 (45%) 28 (20%) 49 (35%) 139
Number of males 46 (74%) 21 (75%) 48 (98%) 115 (83%)
Considering a treatment change 22 (36%) 10 (36%) 15 (31%) 47 (34%)
Mean NRS illness severity 5.95 (2.092) 6.61 (2.2) 6.22 (2.143) 6.18 (2.131)
Mean Charleson co-morbidity score .516 (.621) 1.57 (1.5) 2.67 (1.16) 1.489 (1.416)
Mean duration of pain in years 7.40 (3.766) 13.11 (11.48) 21.06 (20.113) 13.37 (14.483)
Course of the pain:
 Will clear up and go away 0 (0%) 2 (7.1%) 4 (8.2%) 6 (4.3%)
 Will get better then come back 4 (6.5%) 2 (7.1%) 2 (4.1%) 8 (5.7%)
 Will last for a long time 12 (1.94%) 1 (3.6%) 3 (6.1%) 16 (11.5%)
 Will last for the rest of my life 46 (74.2%) 23 (82.1%) 40 (81.6%) 109 (78.4%)
Decliners
 Age 22 (31.4%) 16 (22.9% 32 (45.7%) 70
 Males 15 (27.3%) 12 (21.8%) 28 (50.9%) 55

standard deviations or percentages are in parentheses