NHIS Sources

Variable	Year	Supplement
AGER2	1991	Child health
DPTSHOT	1996	Immunization
DPTSHOT	1995	Immunization
DPTSHOT	1978	Immunization
DTPSHOT	1994	Immunization
DTPSHOT	1993	Immunization
DTPSHOT	1992	Immunization
DTPYR1	1991	Child health