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. Author manuscript; available in PMC: 2010 May 25.
Published in final edited form as: Pain. 2009 Apr 29;144(1-2):49–56. doi: 10.1016/j.pain.2009.02.021

Table 4. Mean (SD) Value of Outcome Variables at Baseline and follow-up by Group*.

Baseline Follow-up

Variable (range) Group 1
Control
Group 2
Assessment
only
Group 3
TBI
Group 1
Control
Group 2
Assessment
only
Group 3
TBI
Pain duration (1-5) 3.00(1.13)
(n = 434)
3.06 (1.14)
(n = 431)
3.03 (1.14)
(n = 391)
2.53 (1.31)
(n = 361)
2.59 (1.30)
(n = 343)
2.50 (1.30)
(n = 303)
Barriers (0-8) 4.28 (1.86)
(n = 421)
4.13 (1.86)
(n = 370)
4.01 (2.01)
(n = 348)
3.90 (2.00)
(n = 332)
2.98 (1.95)
(n = 290)
Pain severity (0-10) 3.63 (2.20)
(n = 426)
3.65 (2.30)
(n = 377)
3.26 (2.54)
(n = 348)
3.43 (2.46)
(n = 335)
3.32 (2.36)
(n = 292)
Pain interference (0-10) 5.03 (2.85)
(n = 423)
4.87 (2.88)
(n = 373)
4.45 (3.09)
(n = 361)
4.56 (3.03)
(n = 343)
4.30 (3.05)
(n = 303)
*

Sample sizes vary slightly due to missing data.