Table 4.

Adjusted Prevalencea of Medication Use According to Access to Health Insurance and Usage Characteristics

	≥ 1 Prescription Medication		≥ 5 Prescription Medications

	Percent (95% CI)	P-value	Percent (95% CI)	P-value
Health Insurance^b
0 month	37.2 (27.2–48.5)	<0.001	5.5 (2.1–14.1)	0.24
1–11 months	47.2 (22.6–73.3)		11.0 (1.1–57.8)
12 months	58.9 (36.7–78.0)		10.8 (1.5–48.8)
Prescription Drug Coverage^b
All	66.9 (54.2–77.0)	<0.001	10.9 (6.3–18.3)	0.01
Some	59.7 (35.5–80.0)		11.5 (3.6–31.2)
None	36.2 (16.0–62.7)		3.9 (0.8–17.0)
Insurance Type^c
None	36.9 (27.3–47.6)	<0.001	5.4 (2.1–13.0)	<0.001
Medicaid	71.1 (45.4–87.9)		27.7 (4.7–75.0)
Private/Medicare	56.9 (35.7–75.8)		9.1 (1.4–40.4)
Usual Source of Care^c
Emergency department	27.8 (14.4–47.0)	<0.001	16.9 (6.0–39.4)	0.05
Physician’s office	60.1 (21.6–89.2)		10.3 (1.1–54.7)
Other (hospital out-patient department, community health center, etc)	54.1 (15.9–88.0)		16.8 (1.5–73.0)
No regular source of care	26.3 (6.0–66.7)		5.4 (0.4–46.2)

Data from Survey of the Health of Wisconsin (SHOW), 2008–2010.

Weighted and adjusted for sampling design, as well as age (continuous), gender, and race (non-Hispanic white and other).

P-value for trend in ordinal independent variable tested using design adjusted, survey weighted logistic regression.

P-value for Wald chi-square test in nominal independent variables tested using design adjusted, survey weighted logistic regression.