. Author manuscript; available in PMC: 2014 Sep 11.

Published in final edited form as: J Am Pharm Assoc (2003). 2014 Jul-Aug;54(4):374–382. doi: 10.1331/JAPhA.2014.13195

Table 2.

Mean Number of Drug Classes in the Year Before and the Year After Diabetes Diagnosis


Variable	Year Before Diabetes Incidence	Year After Diabetes Incidence	Difference	Ho: Means are Equal

	Mean (StDev)	Mean (StDev)	Mean (StDev)	P-Value

Number of Diabetes Drug Classes	n/a	0.60 (0.76)	0.60 (0.76)	n/a
Number of Antihypertensive Drug Classes	1.24 (1.28)	1.54 (1.28)	0.30 (0.87)	<.0001
Number of Lipid-lowering Drug Classes	0.39 (0.58)	0.74 (0.62)	0.35 (0.58)	<.0001
Number of Mental Health Drug Classes	0.35 (0.68)	0.39 (0.71)	0.04 (0.53)	<.0001
Overall Number of Drug Classes	4.98 (4.05)	6.63 (4.14)	1.65 (3.18)	<.0001