Table 2. Odds ratio for asthma for each exposure variable and estimation method.

Exposure	Estimation method	Odds ratio	95% confidence interval
TRAP	Birth	2.76	0.57, 12.42
	Last	2.61	0.39, 15.66
	Mean	3.76	0.54, 23.90
Greenspace	Birth	0.14	0.02, 1.19
	Last	0.18	0.02, 1.70
	Mean	0.15	0.01, 2.04
Deprivation index	Birth	9.28	2.93, 28.96
	Last	9.50	2.61, 33.94
	Mean	14.65	4.03, 52.83
Race index	Birth	0.62	0.09, 4.48
	Last	0.69	0.11, 4.73
	Mean	0.31	0.04, 2.68