Table 3.

Reliability, test–retest and systematic differences of auto-reported physical activity question from CAPL-2 battery assessment.

	Test (n = 69)			Retest (n = 69)			Reliability test
	M	SD	Item-total correlation	M	SD	Item-total correlation	Cronbach’s α	ICC (95% CI)	Value of p†	SEM	%SEM	MDC	MDC %
DB	4.29	1.83	N/A	4.35	1.89	N/A	0.979	0.958	0.371	0.38	8.8	1.06	24.4

DB, Daily Physical Activity Behavior; M, Mean; SD, standard deviation; 95% CI, confidence interval of 95%; ICC, intraclass correlation coefficient; SEM, standard error of measurement; %SEM, standard error of measurement as a percentage; MDC, minimum detectable change; N/A, not applicable; ^†Friedman test value of ps. Item-total correlation refers to the magnitude of association between each item with its domain.