Table 1.

Regression coefficients for the linear regression and two-parts model.

	Regression coefficient		N = 272,806
Model	Age	95% CI	Non-German	95% CI
Linear regression	0.017	[0.016, 0.017]	0.064	[0.047; 0.081]
Two part model
Logistic Regression, OR (being fully satisfied)	1.036	[1.035, 1.037]	1.218	[1.165, 1.273]
Linear regression conditional on possible negative answer	0.0095	[0.0091, 0.0099]	0.0015	[−0.0191, 0.0221]