NHIS Sources

Variable Year Supplement
POLDT_Y4 2003 Child immunization
POLDT_Y4 2002 Child immunization
POLDT_Y4 2001 Child immunization
POLDT_Y4 2000 Child immunization
POLDT_Y4 1999 Child immunization
POLDT_Y4 1998 Child immunization
POLDT_Y4 1997 Child immunization
POLIOYR4 1996 Immunization
POLIOYR4 1995 Immunization
POLIOYR4 1994 Immunization
POLIOYR4 1993 Immunization
POLIOYR4 1992 Immunization
POLIOYR4 1991 Child health