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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Acad Emerg Med. 2011 Nov 1;18(11):1156–1160. doi: 10.1111/j.1553-2712.2011.01206.x

Table 4.

Hierarchical Regression Analysis Summary for Patient Variables Predicting PTSD Symptom Severity Scores

Variable b SEB B R2 ΔR2
Step 1 0.93 0.93
 Trauma type 0.006 0.001 0.204
 Income 0.001 0.001 0.117
 Marital status 0.002 0.001 0.060
Step 2 0.93 0.00
 Age 0.001 0.004 0.018

n = 527

b = unstandardized regression coefficients; SEB = standard error of b; B = standardized regression coefficients; R2 = coefficient of determination, the proportion of variability in a data set that is accounted for by the statistical model.

PTSD = Posttraumatic stress disorder