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. Author manuscript; available in PMC: 2014 Feb 15.
Published in final edited form as: Br J Health Psychol. 2012 Aug 22;18(2):420–438. doi: 10.1111/j.2044-8287.2012.02085.x

Table 5.

Linear regression of log interleukin-6 on Positive Relationships, Autonomy, and their interactions with gender in a US national sample of adults

Variable β p Total R2 R2 Δ p
Model 1: IL-6 (log10 transformation)
Step 1 .19 .19 <.001
 Gender .07 .004
 Age .007 <.001
 Body Mass Index (BMI) .02 <.001
 Statin Use .03 .28
 Beta-blocker Use −.09 .007
Step 2 .19 .002 .19
 Positive Relationships −.002 .19
Step 3 .20 .01 .001
 Positive Relationships x Gender −.01 .001
Step 4 .20 .000 .55
 Positive Relationships2 .000 .55
Step 5 .20 .000 .69
 Positive Relationships2 x Gender .000 .69
Model 2: IL-6 (log10 transformation)
Step 1 .19 .19 <.001
 Gender .07 .004
 Age .007 <.001
 Body Mass Index (BMI) .02 <.001
 Statin Use .03 .28
 Beta-blocker Use −.09 .007
Step 2 .19 .002 .26
 Autonomy −.002 .26
Step 3 .19 .000 .80
 Autonomy x Gender .001 .80
Step 4 .19 .001 .45
 Autonomy2 .000 .45
Step 5 .19 .001 .47
 Autonomy2 x Gender .000 .47

Note.

*

p < .05. For R2 values, an asterisk indicates that the F value for the ANOVA of the full model at that step is significant. For ΔR2, an asterisk indicates that the inclusion of that step’s novel predictor produced an F value than was significantly greater than that of the previous model.