A prospective analysis of physical activity and mental health in children: the GECKO Drenthe cohort

Table 1 Characteristics of excluded and included subjects

	Excluded (n = 220)	Included (n = 850)	P value
Sex ^a
Boys	114	438	0.94
Girls	106	412
Age at physical activity measurement ^b	5.11 (0.90)	5.10 (0.90)	0.14
Age at SDQ measurement ^b,d	10.92 (0.53)	10.57(0.55)	< 0.001
physical activity variables
physical activity volume (cpm) ^c	1319.50 [1126.68, 1521.21]	1319.67 [1142.81,1517.29]	0.99
sedentary time (min) ^c	369.32 [333.15, 407.70]	372.42 [334.80, 408.27]	0.82
LPA (min) ^b	265.44 (36.63)	264.71 (38.20)	0.47
MPA (min) ^c	43.81 [33.77, 54.84]	43.75 [34.81, 54.80]	0.80
VPA (min) ^c	17.40 [11.22, 24.91]	16.56 [11.23, 24.19]	0.88
MVPA (min) ^c	62.81 [45.95, 78.61]	61.25 [47.90, 80.08]	0.91

SDQ the Strengths and Difficulties Questionnaire, LPA Light Physical Activity, MPA Moderate Physical Activity, VPA Vigorous Physical Activity, MVPA Moderate to Vigorous Physical Activity
^a Chi-squared test
^b Independent samples t-test. Data was shown as mean (SD)
^c Non-parametric Mann–Whitney U test. Data was shown as median [P25, P75]
^d Age at 2^nd SDQ in excluded subjects n = 116 due to missing data

ISSN: 1479-5868