Table 1. Details of information provided by each state in the pooled analysis.

State	Ages at diagnosis	Years of diagnosis	Years of birth	RMS cases	No. of controls	Matching factors
Minnesota	28 days to 14 years	1988–2004	1976–2004	73	8735	Birth year
Washington	28 days to 14 years	1980–2004	1980–2004	74	23 728	Birth year, sex
California	28 days to 4 years	1988–1997	1983–1997	136	8730	Birth year, sex
New York	28 days to 14 years	1985–2001	1970–2001	152	12 041	Birth year
Texas	28 days to 14 years	1990–1998	1975–1998	148	4732	Birth year

Abbreviation: RMS=rhabdomyosarcoma.