Table 4.

Comparison of Inpatient and Outpatient Screening Results, 1999–2002

	Inpatient (n = 1,105)	Outpatient (n = 111,933)	Odds ratio	95% confidence interval
Test result
Any abnormal	15.5	7	2.44	(2.07, 2.82)
Atypical squamous cells	6	4	1.52	(1.18, 1.96)
Low-grade squamous intraepithelial lesion	5.4	2	2.77	(2.13, 3.61)
High-grade squamous intraepithelial lesion	3	0.7	4.63	(3.28, 6.52)
Atypical glandular cells of undetermined significance	1	0.2	3.38	(1.85, 6.18)

Inpatient and outpatient data are presented at percentages.

Outpatient Pap test results are from all Johns Hopkins–affiliated outpatient settings in the Baltimore area.