Table 1.

Hospital Discharge Concordance by Medicare Program, Year and Site

Site
	Concordance Status
		2006	2007	2008	2009	2010	2011	Change 2006–11 (% Pts)
FFS	Matched	69.71%	69.52%	71.11%	70.93%	69.10%	69.23%	−0.5
	ARIC Only	10.10%	9.12%	9.44%	8.18%	8.33%	9.60%	−0.5
	MedPAR Only	20.19%	21.36%	19.45%	20.89%	22.57%	21.17%	1
	Total Discharges	2,477	2,230	2,373	2,296	2,075	2,026
MA (Total & by Site)	Matched	30.80%	18.17%	54.44%	57.53%	60.88%	59.99%	29.2
	ARIC Only	60.76%	73.90%	27.30%	23.46%	22.47%	21.12%	−39.6
	MedPAR Only	8.44%	7.93%	18.25%	19.01%	16.65%	18.89%	10.5
	Total Discharges	831	855	1,010	1,127	1,149	1,171
Forsyth County, NC	Matched	0.20%	1.45%	73.91%	73.44%	71.76%	70.90%	70.7
	ARIC Only	99.80%	98.00%	13.74%	12.50%	13.47%	13.73%	−86.1
	MedPAR Only	0.00%	0.54%	12.35%	14.06%	14.77%	15.37%	15.4
	Total Discharges	270	298	334	417	409	425
Minneapolis, MN	Matched	40.85%	37.70%	51.47%	56.36%	62.88%	60.55%	19.7
	ARIC Only	39.77%	45.36%	17.30%	13.05%	15.02%	14.08%	−25.7
	MedPAR Only	19.38%	16.94%	31.24%	30.59%	22.10%	25.37%	6
	Total Discharges	274	265	338	404	392	412
Jackson, MS	Matched	44.71%	8.38%	38.54%	43.38%	55.65%	58.27%	13.6
	ARIC Only	48.68%	84.52%	50.00%	44.66%	30.44%	22.98%	−25.7
	MedPAR Only	6.61%	7.11%	11.46%	11.97%	13.91%	18.75%	12.1
	Total Discharges	222	208	259	247	256	256
Washington Cnty MD	Matched	79.81%	39.96%	36.49%	15.18%	18.60%	6.67%	−63.1
	ARIC Only	16.35%	52.56%	54.05%	77.68%	71.51%	89.33%	63
	MedPAR Only	3.85%	7.48%	9.46%	7.14%	9.88%	4.00%	0.2
	Total Discharges	65	84	79	59	92	78

FFS = fee for service; MA = Medicare Advantage

Note: The percentages are calculated from discharges that have been weighted to be per-member per-year.

The total discharges are calculated using the raw discharges that have not been weighted.