Change in children’s physical activity and sedentary time between Year 1 and Year 4 of primary school in the B-PROACT1V cohort

Table 2 Associations of child and parent characteristics at Year 1 with the odds of child participation in the study in Year 4

Child Characteristic at Year 1 (Total N = 1,299)		Child participated in Year 4
Child Characteristic at Year 1 (Total N = 1,299)		Odds ratio (95% CI)
Child gender	Boy	Reference
Child gender	Girl	1.42 (1.07, 1.88)
BMI category	Under/Normal weight	Reference
	Overweight	0.78 (0.55, 1.10)
	Obese	0.63 (0.39, 1.03)
IMD score		0.99 (0.97, 1.01)
Number of siblings	0	Reference
	1	1.26 (0.62, 2.53)
	2	0.94 (0.47, 1.87)
	3 or more	0.61 (0.26, 1.44)
Female parent responded	No	Reference
Female parent responded	Yes	1.02 (0.82, 1.27)
Male parent responded	No	Reference
Male parent responded	Yes	1.12 (0.87, 1.44)
Female parent age (years)		1.03 (0.99, 1.06)
Male parent age (years)		1.02 (0.99, 1.05)
Female parent BMI (kg/m²)		0.98 (0.95, 1.01)
Male parent BMI (kg/m²)		0.98 (0.93, 1.03)
Female parent ethnicity	White British	Reference
Female parent ethnicity	Other	0.82 (0.54, 1.25)
Male parent ethnicity	White British	Reference
Male parent ethnicity	Other	0.81 (0.49, 1.35)
Female parent employment status	Not working	Reference
Female parent employment status	Working full/part time or in full time education	1.12 (0.82, 1.52)
Male parent employment status	Not working	Reference
Male parent employment status	Working full/part time or in full time education	1.20 (0.53, 2.70)

ISSN: 1479-5868