. Author manuscript; available in PMC: 2014 Jul 9.

Published in final edited form as: Res Social Adm Pharm. 2010 Jun;6(2):90–99. doi: 10.1016/j.sapharm.2010.02.004

Table 1.

Summary of Outcome Variables for Individuals Eligible for Part D and the Control Group by Level of Pre-Part D Out-of-Pocket Drug Spending

	Overall	Lowest Level of Pre-Part D Spending	Moderate Level of Pre-Part D Spending	Highest Level of Pre-Part D Spending

Part D Eligible	n = 11,133	N = 3,681	n = 3,778	n = 3,674

Total Drug Spending	$1,208	$123	$1,018	$2,490^*
	($6,276)	($495)	($1,452)	($1,987)

Patient Out-of-pocket Drug Spending	$530^*	$13^*	$218	$1,369^*
	($852)	($17.9)	($118)	($1,054)

% Patient Paid Out-of-pocket	46	22^*	50^*	66^*
	(37)	(34)	(33)	(30)

Pill-days	680^*	80	555^*	1,410
	(817)	(322)	(577)	(817)

Age	74.5^*	74.1^*	74.3^*	75.2^*
	(6.5)	(6.1)	(6.5)	(6.8)

% Female	62.3^#	58.8	61.8	66.2^#



Control	n = 1,652	n = 415	n = 763	n = 474

Total Drug Spending	$1,142	$112	$691	$2,769^*
	($1,559)	($333)	($746)	($1,893)

Patient Out-of-pocket Drug Spending	$409^*	$29^*	$220	$1,045^*
	($560)	($17)	($116)	($693)

% Patient Paid Out-of-pocket	49	58^*	48^*	45^*
	(28)	(34)	(26)	(21)

Pill-days	620^*	81	451^*	1,366
	(707)	(222)	(400)	(765)

Age	61.0^*	61.0^*	61.0^*	61.0^*
	(.58)	(.58)	(.58)	(.59)

% Female	59.5^#	60.0	58.7	60.3^#

p < 0.05, difference in mean between seniors eligible for Part D and control group overall and within pre-Part D spending level, t-test.

p < 0.05, test of association between seniors eligible for Part D and control group overall and within pre-Part D spending level, chi-squared test.

Note: Numbers in parentheses are standard deviations. Spending categories (Lowest, Moderate, and Highest) were created by determining cut points representing thirds of the distribution of the pre-Part D patient out-of-pocket drug spending variable for seniors eligible for Part D.