Table 2

Demographic characteristics of study population (n=10 169), compared with the under-5-year-old population of Brent and Harrow and p-value of difference by χ²

	Study population (n=10 169)		PRA population (n=655)		General population (n=38 362)		Isnon-PRA population different to PRA?	Is study population different to general?
Characteristic	n	%	n	%	n	%	p Value	p Value
Gender
Female	4656	45.8	279	42.6	18 766	48.9	0.089	<0.001
Male	5512	54.2	376	57.4	19 596	51.1
Missing	1	0.0
Age
0 year	2828	27.8	186	28.4	7998	20.8	<0.001	<0.001
1 year	2389	23.5	192	29.3	7843	20.4
2 years	1884	18.5	120	18.3	7652	19.9
3 years	1579	15.5	88	13.4	7573	19.7
4 years	1489	14.6	69	10.5	7296	19.0
Ethnicity
White	2771	27.2	199	30.4	11 214	29.20	<0.001	<0.001
Mixed	547	5.4	40	6.1	4004	10.40
Asian/Asian British	4546	44.7	277	42.3	13 890	36.20
Black/Black British	957	9.4	68	10.4	6784	17.70
Other ethnicity	959	9.4	61	9.3	2470	6.40
Not stated	389	3.8	10	1.5
IMD	Mean	22.48	Mean	21.68	Mean*	23.69	p=0.025

*Brent and Harrow.
PRA, paediatric repeat attenders.