Table 5.

Univariate associations of questionnaire scores with percent time spent in light and moderate-to-vigorous activity

	% Time spent in light activity				% Time spent in moderate-to-vigorous activity
Measure	N	r	AIC	LR test p-value	r	AIC	LR test p
Physical Activity Scale for the Elderly Score	46	0.30	322.9	0.034	0.21	254.9	0.145
Four week physical activity history questionnaire	46	ICC = 0.01	327.1	0.581	ICC=0.38	251.5	0.018
IPAQ sitting time	46	− 0.13	320.4	0.007	−0.23	250.1	0.008
Human Activity Profile–Maximum Activity Score	46	0.22	325.1	0.132	0.47	245.7	<0.001
Human Activity Profile–Adjusted Activity Score	46	0.19	325.7	0.191	0.41	248.4	0.003
SF-36 Physical Component Score	45	0.24	321.3	0.013	0.44	241.5	<0.001

Abbreviations: AIC: Akaike information criterion (=2k – 2ln(L), where k is the number of parameters and L is the maximized likelihood estimate of the model) Lower AICs indicate better model performance; LR: Likelihood ratio; ICC: Intraclass correlation coefficient; SF-36 PCS: Medical Outcomes Study 36-Item Short-Form Health Survey version 2 Physical Component Scale; IPAQ: International Physical Activity Questionnaire.

Based on the following cut-points: light activity: 60 – 1158 counts per minute; moderate-to-vigorous: >1159 counts per minute.