Laboratory testing for cytomegalovirus among pregnant women in the United States: a retrospective study using administrative claims data

Table 1 Characteristics of pregnant women ^a and pregnant women ^a with a diagnostic code for CMV, MarketScan 2009

Characteristic	Pregnant women^a		Pregnant women^awith an ICD-9-CM diagnostic code for CMV disease
	#	%	#	%
Age Group (years)
15-19	2,955	3.8%	0	0.0%
20-29	30,819	39.6%	4	33.3%
30-39	40,815	52.5%	8	66.7%
40-44	3,184	4.1%	0	0.0%
Urban Residence
No	10,592	13.6%	2	16.7%
Yes	67,181	86.4%	10	83.3%
Region ^b
Northeast	9,674	12.5%	1	8.3%
North Central	21,206	27.3%	3	25.0%
South	34,781	44.8%	5	41.7%
West	11,970	15.4%	3	25.0%
Diagnostic Code for Infectious Mononucleosis ^c
No	77,729	99.9%	12	100.0%
Yes	44	0.1%	0	0.0%

Note: CMV, cytomegalovirus; ICD-9-CM, International Classification of Diseases-9^th revision, Clinical Modification.
^aPregnant women defined as female enrollees who were 1) aged 15–44 years, 2) enrolled for the entire year in 2009, and 3) had a delivery code (defined in Appendix) between October-December 2009.
^bExcludes those pregnant women with other or unknown information on region.
^cA diagnosis of mononucleosis was defined by an ICD-9-CM code for infectious mononucleosis (ICD-9-CM 075).

ISSN: 1471-2334