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. Author manuscript; available in PMC: 2009 Sep 17.
Published in final edited form as: Spine (Phila Pa 1976). 2006 Sep 1;31(19):2263–2269. doi: 10.1097/01.brs.0000232708.66608.ac

Table 3.

Willingness to be Randomized (Adjusted Odds Ratios) by Racial Group and Treatment Preference at Baseline

Diagnosis
 Variable Odds Ratio 95% Confidence Interval p-value
IDH
 Racial Group
 White Reference
 Black 1.13 0.64 2.00 0.66
 Other 1.02 0.58 1.80 0.95
 Treatment Preference
 Non-operative Reference
 Unsure 3.60 2.39 5.42 <0.001
 Surgery 0.25 0.18 0.34 <0.001
SpS/DS
 Racial Group
 White Reference
 Black 0.71 0.45 1.14 0.16
 Other 1.44 0.79 2.63 0.24
 Treatment Preference.
 Non-operative Reference
 Unsure 5.31 3.62 7.80 <0.001
 Surgery 0.40 0.29 0.54 <0.001

Model-based estimates are adjusted for: age, gender, BMI, education, income, marital status, legal status, smoking, hypertension, diabetes, stomach problems, joint problems, episode duration, bothersomeness, frequency, ODI, SF-36 PCS and SF-36 MCS. (These are all variables significant at p<0.1 in the univariate analyses for the overall study pulation). The same set of predictors was used for both IDH and SpS/DS analyses.