Table 2.

Effects of the land-use gradient and living on a farm on atopic sensitization (atopy) in the LUKAS data set. Given a sufficiently high IgE_th, the land-use gradient (around the home at birth) is a statistically significant predictor of atopy at 6 years of age in the pooled data set, but the farmer status of the family is not, when both predictors are included in the same model. We analysed separately the nonmovers (n = 203; children who had not moved house between birth and 6 years of age) and all individuals (n = 300).

	Nonmovers				All
	Gradient		Farm		Gradient		Farm
IgEth	Estimate	P	Estimate	P	Estimate	P	Estimate	P
−0.5	−0.53	0.230	−0.16	0.340	−0.42	0.140	−0.24	0.480
0	−0.86	0.150	−0.29	0.170	−0.47	0.032	−0.41	0.278
0.5	−1.81	0.050	−0.14	0.420	−1.35	0.004	−0.31	0.677
1	−1.71	0.065	−0.44	0.144	−1.10	0.005	−0.67	0.269