Table 3.

Mean waiting time and Length of Stay (LOS) in days by admission year for adult clients in Delaware and Maryland outpatient AOD treatment, 1998 – 2006

	Waiting Time*								Length of Stay**
	Delaware				Maryland, matched sample				Delaware				Maryland, matched sample
Year	N	Mean	SD	Median	N	Mean	SD	Median	N	Mean	SD	Median	N	Mean	SD	Median
1998	311	34.7	31.0	20	268	2.9	1.0	8	240	125.5	80.2	101	240	186.8	78.4	194
1999	307	32.0	27.0	22	376	4.3	1.0	9	358	122.3	72.6	107	358	112.1	89.9	87
2000	418	20.8	12.0	22	480	5.4	1.0	10	448	144.3	79.7	128	448	103.9	84.3	81
2001	1102	22.0	15.0	21	1240	7.2	1.0	12	1175	102.2	80.8	80	1175	116.1	86.3	99
2002	1571	17.9	9.0	20	1713	10.3	6.0	14	1648	113.2	82.4	92	1648	109.0	87.8	86
2003	1654	13.1	6.0	18	1770	9.7	6.0	13	1693	119.3	82.9	100	1693	106.3	85.6	84
2004	1823	9.5	1.0	16	1922	9.1	6.0	11	1826	119.2	87.7	94	1826	111.5	86.2	91
2005	1711	8.5	1.0	16	1824	9.5	6.0	12	1741	122.7	79.5	104	1741	114.1	88.9	92
2006	1792	6.2	1.0	14	1793	9.0	5.0	11	1736	115.9	78.3	95	1736	115.5	84.1	100

^*Excludes records with waiting time > 105 days, the 95th percentile of DE data

^**Excludes admissions with LOS > 338 days, the 95th percentile of DE data