Table 4. Mean Opioid Days Supply and Cumulative Yearly Dose among HealthCore and Arkansas Medicaid Enrollees Receiving Opioids by Non-Cancer Pain Diagnosis Type, 2000 and 2005.

	HealthCore			Arkansas Medicaid
Opioid Use	2000 (N=146,180)	2005 (N=321,429)	% change 00∼05	2000 (N=19,319)	2005 (N=27,551)	% change 00∼05
Arthritis or joint pain
Days Supply of Opioids Per Year [mean (SD)]	44.0 (102.1)	54.4 (126.7)	23.6%	90.9 (130.3)	122.2 (156.6)	34.3%
Cumulative Yearly Opioid Dose, mg morphine equivalents [mean (SD)]
Total	2546.1 (12779.2)	3537.6 (20981.4)	38.9%	5,322.3 (13347.1)	7371.0 (18966.0)	38.5%
Short-acting Schedule II	1275.0 (9556.5)	2666.4 (22260.7)	109.1%	1510.6 (4361.4)	4568.6 (11587.4)	202.4%
Long-acting Schedule II	20272.3 (42718.7)	28689.2 (53846.7)	41.5%	23556.2 (36640.8)	29761.7 (41665.0)	26.3%
Schedule III-IV	1555.6 (3839.2)	1561.1 (3688.2)	0.4%	3631.6 (6089.8)	3847.5 (5776.0)	5.9%
Back pain
Days Supply of Opioids Per Year [mean (SD)]	55.4 (118.0)	72.5 (150.6)	30.8%	106.6 (147.2)	145.0 (168.2)	36.0%
Cumulative Yearly Opioid Dose, mg morphine equivalents [mean (SD)]
Total	3434.5 (17112.6)	5041.8 (26484.5)	46.8%	6458.8 (16860.5)	8967.5 (20983.9)	38.8%
Short-acting Schedule II	1807.1 (12350.4)	3995.4 (28842.3)	121.1%	1953.4 (6680.0)	5538.5 (13030.1)	183.5%
Long-acting Schedule II	22138.5 (46773.4)	30794.6 (55408.6)	39.1%	26245.7 (39962.7)	29720.5 (39117.3)	13.2%
Schedule III-IV	1825.3 (4179.6)	1888.8 (4105.0)	3.5%	3734.0 (5975.9)	4155.1 (5681.9)	11.3%
Neck pain
Days Supply of Opioids Per Year [mean (SD)]	52.0 (114.2)	70.6 (149.9)	35.8%	107.8 (153.3)	151.6 (174.7)	40.6%
Cumulative Yearly Opioid Dose, mg morphine equivalents [mean (SD)]
Total	3106.3 (14864.7)	4800.1 (24496.7)	54.5%	6386.8 (16141.5)	9824.1 (22227.7)	53.8%
Short-acting Schedule II	1632.0 (8625.7)	3969.8 (25105.6)	143.3%	1667.8 (4858.5)	6410.8 (13426.7)	284.4%
Long-acting Schedule II	21758.0 (44909.0)	29274.4 (51534.4)	34.6%	25386.9 (35915.5)	28527.5 (38331.1)	12.4%
Schedule III-IV	1691.7 (4007.3)	1833.6 (4038.8)	8.4%	3491.0 (5645.9)	4091.9 (5410.7)	17.2%
Headache
Days Supply of Opioids Per Year [mean (SD)]	73.4 (141.6)	78.8 (157.2)	7.3%	92.7 (135.4)	121.6 (156.0)	31.1%
Cumulative Yearly Opioid Dose, mg morphine equivalents [mean (SD)]
Total	4150.9 (18842.7)	5016.0 (25305.1)	20.8%	5045.8 (13978.9)	6776.3 (15600.1)	34.3%
Short-acting Schedule II	2578.4 (19416.6)	4032.3 (25111.6)	56.4%	1377.2 (3423.2)	4197.3 (10541.1)	204.8%
Long-acting Schedule II	24513.6 (47615.8)	30128.6 (56265.0)	22.9%	22001.4 (37780.3)	21399.2 (30506.5)	-2.7%
Schedule III-IV	2220.8 (4667.7)	2077.8 (4489.9)	-6.4%	3112.8 (5175.6)	3722.1 (5594.3)	19.6%