Table 2.

Demographic profile in each arm of the trial

	Control		Intervention
	Median	IQR	Median	IQR	p Value
Child age	3 years	1–5 years	2 years	1–4 years	0.028†
Home IMD* score	12.1	6.9–21.5	12.1	6.5–23.9	0.74†
	n/N	%	n/N	%
Gender (male)	105/209	50.2%	139/292	47.6%	0.56‡
Any smoker in household	34/206	16.5%	82/288	28.5%	0.020‡
Ethnicity
White	187/209	89.5%	251/292	86.0%	0.72 (4 df)‡
Mixed	8/209	3.8%	17/292	5.8%
Asian or Asian British	7/209	3.4%	9/292	3.1%
Black or black British	5/209	2.4%	11/292	3.8%
Other ethnic group	2/209	1.0%	4/292	1.4%

*Index of multiple deprivation.

†Mann-Whitney U test.

‡χ² test.

IMD, Index of Multiple Deprivation.