From: An assessment of self-reported physical activity instruments in young people for population surveillance: Project ALPHA
Criteria
Score = 0
= 1
= 2
N
<15
15-49
N > 50
Sample
convenience
narrow
diverse
Validity: Criterion measure
indirect
direct
Reliability: Test-retest period
Same day
1 week
>= 2 weeks
Absolute value of statistic (b)
poor
fair
Excellent/strong