Table 2.

The methods and measures of data collection at baseline and 6, 12, and 24 months of age

Phase	Phase 1 Study			Phase 2 Study
Time	Baseline	6 months	12 months	24 months
Methods	CATI	CATI	CATI	Face-to-face interview
Main Domains/Measures
Family demographics	X
Mother’s knowledge and intention regarding breastfeeding	X
Mother’s dietary behaviours	X		X	X
Mother’s physical activity and screen time	Xa		X	X
Mother’s height and weight	Xa		X	X
Breastfeeding		X	X	X
Introduction of solids		X
Tummy timeb		X
Infant feeding practices		X	X
Parent-child interaction		X	X
Child’s eating habits			X	X
Child’s physical activity and screen time			X	X
Child’s sleep patterns			X	X
Child’s length and weight		X	X	X

^a before pregnancy

^b a colloquial term used to encourage parents to ensure that their babies spend time in the prone position

CATI computer assisted telephone interviewing