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. 2016 Mar 14;4(1):e21. doi: 10.2196/mhealth.4398

Table 3.

Summary of data collection.

Construct	Instrument	Validity	Reliability^a	Data Collection
Demographics	Demographic Questionnaire		NA	T1^b
Parent Evaluation	Exit Interview		NA	T2^c
Healthy Lifestyles Beliefs Scale	Healthy Lifestyles Beliefs Scale	Content, Construct	.86	T1, T2
Perceived Difficulty	Perceived Difficulty Scale	Content, Construct	.92	T1, T2
Knowledge	Nutrition Knowledge	Content, Construct	.74	T1, T2
Knowledge	Physical Activity Knowledge	Content, Construct	.52	T1, T2
Healthy Lifestyle Behaviors - Parent	Healthy Lifestyle Behaviors Scale	Content, Construct	.78	T1, T2

^a Cronbach’s alpha

^b T1: Time 1

^c T2: Time 2