. Author manuscript; available in PMC: 2010 Jan 1.

Published in final edited form as: J Am Diet Assoc. 2009 Jan;109(1):52–63. doi: 10.1016/j.jada.2008.10.009

Appendix B.

The influence of household participation in food assistance programs on child-mother resemblance in dietary intakes: Spearman’s rank correlation coefficients^*

	Energy (kcal)	Calcium (mg)	Fruits and vegetables (servings/day)
Boys
Participation	−0.27 (−0.57, 0.10)	−0.34 (−0.62, 0.02)	0.07 (−0.29, 0.41)
Non-participation	−0.32 (−0.65, 0.12)	−0.16 (−0.54, 0.28)	0.13 (−0.31, 0.52)
Girls
Participation	0.13 (−0.18, 0.41)	0.10 (−0.21, 0.39)	0.09 (−0.22, 0.38)
Non-participation	0.49^¶ (0.12, 0.74)	0.35 (−0.05, 0.65)	0.22 (−0.19, 0.57)

Spearman’s rank correlation coefficient is a nonparametric measure. It is calculated between the ranks of children’s dietary intakes against those of their mothers’. Pearson correlation coefficients were similar (not presented).

^¶

Statistically significant under null hypothesis of r=0 (P<0.05).