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

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

Child Characteristic at Year 1 (Total N = 1,299)

Child participated in Year 4

Odds ratio (95% CI)

Child gender

Boy

Reference

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

Yes

1.02 (0.82, 1.27)

Male parent responded

No

Reference

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

Other

0.82 (0.54, 1.25)

Male parent ethnicity

White British

Reference

Other

0.81 (0.49, 1.35)

Female parent employment status

Not working

Reference

Working full/part time or in full time education

1.12 (0.82, 1.52)

Male parent employment status

Not working

Reference

Working full/part time or in full time education

1.20 (0.53, 2.70)