Predictors of validity and reliability of a physical activity record in adolescents

BMC Public Health

Table 4 Predictors of measurement agreement for standardized PA record and accelerometer recordings

Predictors	Full model PA record 1 - accelerometer^a
	SED		LPA		MPA		VPA
	β	P-value	β	P-value	β	P-value	β	P-value
Female	-72.6	0.007	73.4	0.001	32.6	0.146	-33.4	0.009
Age	-6.1	0.590	2.6	0.782	5.5	0.553	-2.1	0.689
Rural	-49.6	0.115	99.9	<0.001	-51.8	0.047	1.6	0.916
BMI	-6.3	0.094	3.4	0.285	2.1	0.492	0.7	0.688
Convenience_1 ^b	-30.4	0.374	27.4	0.347	-6.1	0.829	9.1	0.574
Convenience_2 ^b	3.2	0.918	14.8	0.575	-37.9	0.139	20.1	0.171

^aLinear mixed model with school as random effect.
^bConvenience categories using the lowest convenience category as reference.
SED: Sedentary Intensity Physical Activity; LPA: Low Intensity Physical Activity; MPA: Moderate Intensity Physical Activity; VPA: Vigorous Intensity Physical activity.

ISSN: 1471-2458