Table 3.

ARMA (1,1) model parameter characteristics for Control Group: SC Medicaid Beneficiaries, 2002–2006.

Control Group	Estimate	Std Error	T	P-value
MU	3.0945	0.1434	21.58	<0.0001
MA 1,1	0.7565	0.2066	3.66	<0.001
AR 1,1	0.9285	0.1109	8.38	<0.0001
2005 Chlorine spill a	−0.2228	0.2083	−1.07	0.29

MU = mean term. MA1,1 = moving average of order one term. AR 1,1 = autoregressive of order one term. ^a intervention term.