Table 2.

Key measures, data source, and time of assessment. All questionnaire items were either taken from or directly informed by validated questionnaires.

Measures		Data source	Time points
			T1a	T2b	T3c	T4d	Oe
Feasibility/acceptability measures (primary measures)
	Usage of Web-based tool	Tracking system (internally created)	—f	—	—	—	Cg/Ph
	Usability of Web-based tool	Interview, questionnaire items [62-64]	—	C	C/P	C/P	—
	Feasibility of study implementation	Process data (eg, recruitment, attrition) [65,66]	—	—	—	C/P	Si
Outcome measures (secondary measures)
	Dietary knowledge and attitudes	Questionnaire items [67,68]	C	C	C	C	—
	Dietary intake	Questionnaire items [69,70]	C	C	C	C	—
	Anthropometric measures	Digital stadiometer, body composition monitor	C	—	—	C	—
	Feeding practices	Questionnaire items [71]	P	—	P	P	—
	Home food environment	Questionnaire items [72]	P	—	P	P	—

^aT1: Time points indicated by baseline.

^bT2: Time points indicated by midpoint (3 weeks postbaseline).

^cT3: Time points indicated by endpoint (6 weeks postbaseline).

^dT4: Time points indicated by follow-up (3 months postintervention).

^eO: Ongoing throughout intervention period.

^fIndicates measures that were not collected at specific timepoints.

^gC: Data collected from child.

^hP: Data collected from parent/guardian.

ⁱS: Data collected from study staff (internal).