Table 1. Demographic information.

		Whole sample	(SD)	Active	(SD)	Placebo	(SD)
		N = 376		N = 187		N = 189
Age	(in months)	105.5	10.1	105.6	10.2	105.3	10.1
Sex			(%)		(%)		(%)
	Male	235	62.5	120	64.2	115	63.2
	Female	141	37.5	67	35.8	74	40.7
Ethnicity
	White	315	83.8	155	82.9	160	87.9
	Mixed	5	1.3	3	1.6	2	1.1
	Asian	9	2.4	5	2.7	4	2.2
	Black	8	2.1	5	2.7	3	1.6
	Other	2	0.5	2	1.1	0	0
	Unknown	37	9.8	17	9.1	20	11.0
Eligibility for Free School Meals (FSM)
	Not entitled	214	56.9	109	58.3	105	57.7
	Entitled to FSM	78	20.7	33	17.6	45	24.7
	Unknown	84	22.3	45	24.1	39	21.4