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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: J Pain. 2012 Jan;13(1):81–89. doi: 10.1016/j.jpain.2011.10.006

Table 1.

Demographic characteristics for the age and sex matched groups.

Healthy
Cohort
N=56
Clinical
Cohort
N=58

Subject's characteristics Mean (SD) Mean (SD) P-Value
32.34 >0.05
Age 28.71 (8.44) (11.55)

Gender >0.05
     -  Male 40 (71.4%) 41 (70.7%)
     -  Female 16 (28.6%) 17 (29.3%)

Dominant Side >0.05
     -  Right 54 (96.4%) 54 (89.7%)
     -  Left 2 (3.6%) 6 (10.3%)

Ethnicity >0.05
     -  Hispanic or Latino 7 (12.5%) 5 (8.6%)
     -  Non Hispanic or Latino 48 (85.7%) 50 (86.2%)
     -  Unknown or not reported
1 (1.8%) 3 (5.2%)

Race >0.05
     -  Asian 4 (7.1%) 1 (1.7%)
     -  Native Hawaiian or Other 1 (1.8%) 0
     -  Pacific Islander
     -  Black or African American
     -  White 2 (3.6%) 1 (1.7%)
     -  More Than One Race
     -  Unknown or Not Reported 44 (78.6%) 51 (87.9%)
3 (5.4%) 2 (3.4%)
1 (1.8%) 3 (5.2%)

BPI
     -  Baseline 0.43 (0.73) 3.01 (1.94)
     -  post 48 hours 2.22 (1.64) ------
     -  Rating >0 after 48 hours 53 ------
     -  post 96 hours (94.6%) 1.00 1.33 (0.18)
     -  3 month after surgery (1.03)
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