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. Author manuscript; available in PMC: 2018 Apr 16.
Published in final edited form as: Paediatr Perinat Epidemiol. 2017 Sep 22;31(6):563–572. doi: 10.1111/ppe.12412

Table 1.

Characteristics of original state datasets

State Years of
diagnosis		 Years of
birth		 No.
cases		 No. controls Matching
factors
California 1988–1997 1987–1997 152 7607 Birth year, Sex
Minnesota 1988–2004 1987–2004 44 5999 Birth year
New York 1985–2001 1984–2001 68 6663 Birth year
Texas 1990–1998 1989–1998 87 2385 Birth year, Sex
Washington 1980–2004 1980–2004 51 22738 Birth year