TABLE 1.

Characteristics of prenatal specimens submitted for infectious diseases screening (with or without rubella screening) in Alberta between August 1, 2002, and December 31, 2005 (n=159,046)

Variable	Mean ± SD
Age, years	28.0±5.7
Gravidity	2.4±1.6
Parity	1.0±1.2
	Specimens, n (%)
Health region
Calgary	57,269 (36.0)
Edmonton	46,376 (29.2)
Northern Alberta	27,846 (17.5)
Southern Alberta	27,555 (17.3)
Year
August – December 2002	18,155 (11.4)
2003	45,831 (28.8)
2004	46,467 (29.2)
2005	48,593 (30.5)