. Author manuscript; available in PMC: 2009 Nov 12.

Published in final edited form as: J Pediatr Nurs. 2008 Sep 4;24(5):378–388. doi: 10.1016/j.pedn.2008.02.034

Table 4. Summary of Multiple Regression Analysis for Testing Main and Interaction Effects of Independent Variables as Contributing to TNF-α Levels (n = 98).

Variable	Model 1	Model 2	Model 3	Model 4
LnBMI	−4.08 ^**	−2.47	−2.94	−4.11 ^**
Stress_sqr	0.84 ^*	0.83 ^*	2.88	1.18 ^*
Sex^a	0.92	11.12	0.9	2.09
BMI × Sex	–	−3.47
BMI × Stress_sqr	–		−0.67
Sex × Stress_sqr	–			−0.66
Constant	17.94	13.21	14.47	17.45
R²	.148	.160	.149	.154

Note: Model 1 tested the main effects of BMI, stress, and sex (girls); Models 2–4, the interaction effects between BMI and sex, between BMI and stress, and between sex and stress, respectively.

For girls, 1; for boys, 0.

Significant at the .05 α level.

^**

Significant at the .01 α level.