. 2006 Apr;41(2):550–563. doi: 10.1111/j.1475-6773.2005.00487.x

Table 2.

Regression Estimates for the Regression-Discontinuity Model with Simulated Intervention Cutoff of 0.5 Short-Acting β₂-Agonist Canister per Month

Variable	Regression Coefficient	Standard Error	p
Constant	0.264	0.008	<.001
Linear (X_i)	0.424	0.021	<.001
Intervention effect (T_i)	0.016	0.022	.469
	R²=0.221

X_i is the pretest measure minus the cutoff for individual i; T_i is the treatment indicator (1 for treatment; 0 for control).