Table 3.

Relative risk ratios (RRR) for persistent asthma by relative inequality index adjusted for blocks of mediators (N=7487)

	Baseline model		Model 1		Model 2		Model 3		Model 4
	RRR*	95% CI	RRR	95% CI	RRR	95% CI	RRR	95% CI	RRR	95% CI
Transient asthma
RII	1.25	0.83 to 1.90	1.03	0.67 to 1.58	1.00	0.64 to 1.55	0.96	0.62 to 1.48	0.89	0.58 to 1.36
Persistent asthma
RII	1.70	1.21 to 2.40	1.45	1.03 to 2.06	1.45	1.02 to 2.05	1.49	1.04 to 2.14	1.41	0.98 to 2.03

Model 1: Baseline model+perinatal characteristics (maternal pre-pregnancy body mass index; breastfeeding duration; birth weight; gestation; maternal smoking during pregnancy; alcohol use during pregnancy; wheeze.

Model 2: Model 1+housing conditions (damp; tenure; furry pets; environmental tobacco smoke; access to garden).

Model 3: Model 2+potential exposure to infection (sibling number; childcare type).

Model 4: Model 3+neighbourhood characteristics (volume of traffic; housing quality; rubbish; area rating).

*All models were adjusted for baseline confounders (child sex, maternal age at birth, maternal ethnicity and maternal atopy).

RII, relative index of inequality.