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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: Biol Psychol. 2009 Feb 23;81(2):131–134. doi: 10.1016/j.biopsycho.2009.02.003

Table 2.

Contributions of demographic and general health covariates, RA-related factors, and inflammatory markers to prediction of somatic depressive symptoms in hierarchical linear regression models

ΔR2 B B (se) p
Step 1: F(1,167) = 5.65, p = .02 .03
BMI .18 .08 (.03) .02
Step 2: F(2,166) = 6.10, p = .003 .03
CRP .19 1.07 (.44) .02
Step 1: F(1,164) = 5.32, p = .02 .03
BMI .17 .07 (.03) .03
Step 2: F(3,162) = 7.61, p < .001 .09
Pain .24 .19 (.07) .01
Disability .06 .27 (.36) .45
Step 3: F(4,161) = 6.07, p < .001 .01
CRP .09 .54 (.46) .24