Effectiveness of a school-based physical activity intervention on obesity in school children: a nonrandomized controlled trial

Table 3 Comparison of basic characteristics between subjects lost to follow-up and those with complete participation at baseline

Characteristic	Subjects lost to follow-up	Subjects with complete participation	P value
	(N = 88)	(N = 832)
Age, mean (SD), y	10.5 (1.9)	11.0 (2.3)	0.067
Sex, no. (%)
Boys	43 (48.9)	446 (53.5)	0.403
Girls	45 (51.1)	387 (46.5)
Body mass index, mean (SD), kg/m²	18.78 (4.33)	19.67 (4.41)	0.070
Overweight/obesity, no. (%)	31 (35.2)	308 (37.0)	0.746
Duration of MVPA (min/day)^a	37.1 (35.0)	46.7 (56.7)	0.141
In school	25.7 (24.3)	29.4 (36.1)	0.369
Out of school	11.5 (17.7)	17.3 (31.1)	0.100

^aSubjects with complete 7-day records were included in analysis (88 subjects lost to follow-up, 738 subjects with complete participation).
MVPA: moderate to vigorous physical activity.

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