Table 3.

Unadjusted odds ratio of recording more than median time ACTIVE at T0, T1 and T2 as proportion of accelerometer wear time, by baseline characteristics

	T0		T1		T2
	OR	95% CI	OR	95% CI	OR	95% CI
Intervention status
Intervention	Ref		Ref		Ref
Control	0.89	0.46, 1.73	0.81	0.33, 1.99	0.86	0.30, 2.51
Body Mass Index (Kg/m2)
30-34.9	Ref		Ref		Ref
35+	1.81	0.89, 3.66	0.85	0.34, 2.14	1.25	0.42, 3.70
Age (years)
<35	Ref		Ref		Ref
≥35	0.78	0.37, 1.67	1.40	0.52, 3.77	0.53	0.17, 1.62
Parity
Nulliparous	Ref		Ref		Ref
Parous	2.73	1.36, 5.48	1.04	0.40, 2.70	1.19	0. 38, 3.75
Smoking status
Current or ex-smoker	1.46	0.71, 2.98	1.20	0.47, 3.01	0.53	0.17, 1.62
Never smoked	Ref		Ref		Ref
Ethnicity
White	Ref		Ref		Ref
Black, Asian or other	1.09	0.54, 2.19	3.96	1.44, 10.89	0.53	0.17, 1.62
Marital status
Married/cohabiting	Ref		Ref		Ref
Single/divorced/separate	0.72	0.37, 1.42	1.17	0.47, 2.90	1.00	0.34, 2.91
Educational achievement
Degree or higher	Ref		Ref		Ref
No degree	4.03	1.96, 8.28	1.80	0.72, 4.51	1.82	0.62, 5.35
Employment status
Paid or self employment	Ref		Ref		Ref
Not in paid employment	1.46	0.70, 3.04	1.76	0.67, 4.67	2.20	0.63, 7.74
Living accommodation
Owned or private rented	Ref		Ref		Ref
Rented (council)	1.00	0.51, 1.95	1.00	0.39, 2.54	0.72	0.23, 2.23
IMD quintile
1-4	Ref		Ref		Ref
5 (most deprived)	1.53	0.73, 3.20	1.23	0.45, 3.32	1.05	0.32, 3.48
Baseline ACTIVE
Below median	-		Ref		Ref
Above median	-		5.85	2.16, 15.86	5.95	1.80, 19.70
28 week ACTIVE
Below median	-		-		Ref
Above median	-		-		4.61	1.39, 15.24

Statistically significant relationships (p < 0.05) are in bold.

‘ACTIVE’ defined as ≥100 cpm; Median %ACTIVE at T0 = 26.8%; at T1 = 24.7%; at T2 = 26.3%.

T0 = 16⁺⁰ – 18⁺⁶ weeks’ gestation; T1 = 27⁺⁰ – 28⁺⁶ weeks’ gestation; T2 = 35⁺⁰ – 36⁺⁶ weeks’ gestation.