Table 1.

Research measures

Ecological level	Purpose of measure	Variable	Measure	Instruments	When/How collected
Child	Study Outcome	Anthropometrics	Length, weight W/L or BMI graph	Scale/stadiometer	1 week, 1, 6, 12, 18, 24, 36 months Physical measure
	Study covariate, intervention component	Sleep	Hours of infant sleep	BISQ	1, 6, 12, 18, 24, 36 months Questionnaire
	Study covariate, intervention component	Screen time	Home Observation Measurement Environment	HOME tool	1 week, 1, 6, 12, 18, 24, 36 months Observation
	Study outcome, intervention component	Age of food introduction	Week when solid food introduced	24-hr diet recall, analyzed with NDSR; Questionnaire	1, 6, 12, 18, 24, 36 months Interview
Food	Study outcome, intervention component	Daily food intake	Fruit, vegetables, sweet drinks, desserts, candy		questions about breast/bottle feeding will cease when child weaned.
	Study outcome, intervention component	Breast/Bottle Feeding	Amt. formula/times Breastfed per day	Telephone Questionnaire	Monthly for 12 months after birth or until breastfeeding ceases
Parent/Home	Study outcome, intervention component	Parent–child interaction	Feeding scale Teaching scale	FITS	1 week, 1, 6, 12, 18, 24, 36 months Observation
	Study covariate, intervention component	Maternal size	Pre-pregnant BMI	Scale/stadiometer	From Prenatal WIC record Existing data
	Study covariate	Age, education, etc.	Demographics	Questionnaire	Prenatal record Existing data
	Study covariate	Acculturation	Brief ARSMA	Questionnaire	Prenatal Questionnaire