NCHS

National Immunization Survey (NIS) Geocodes

The following lists the geographic variables that exist within the NIS. The variable label explains the variable name. When applying for access to this data through the RDC, please provide the variable name.

Year	Public-Use		Restricted-Use
Year	Variable Name	Variable Label	Variable Name Child Level Analysis File [CLAF]	Variable Label
2007	CEN_REG	Census Region	AREACODE	Area code of respondent
	STATE	State FIPS	C11A_CITY	City lived in when child was born
	ESTIAP07	Estimation IAP Area of residence	C11A_COUNTY	County lived in when child was born
			C11A_STATE	State lived in when child was born
			C11_ZIPCODE	Zip code live in when child was born
			C19_CITY	City currently live in
			C19_CITYLIMITS	Currently live within the city limits
			C19_COUNTY	County currently live in
			C19_STATE	State currently live in
			C19_ZIPCODE	Zip code of current residence
			MR4	Area code of call back telephone number
			BEST_HHGEOCC	Geocoding result accuracy of best HH address
			PR_GEOACC_1	Geocoding result accuracy of addr for provider #1
			PR_GEOACC_2	Geocoding result accuracy of addr for provider #2
			PR_GEOACC_3	Geocoding result accuracy of addr for provider #3
			PR_GEOACC_4	Geocoding result accuracy of addr for provider #4
			PR_GEOACC_5	Geocoding result accuracy of addr for provider #5
			CEN_REG	Census region based on true state of residence
			ESTIAP07	Estimation IAP area of residence
			IAPID07	Sampling AIP area of telephone number
			MSA	Original MSA status based on telephone exchange of HH
			ORIGIAP	Original 1995-2004 IAP area of residence
			RESFIPS	Original state and county FIPS code for current residence
			STATE	True state of residence (state FIPS code)
			TRUEIAP07	True IAP area of residence
2006	CEN_REG	Census Region	AREACODE	Area code of respondent
	STATE	State FIPS	C11A_CITY	City lived in when child was born
	ESTIAP06	Estimation IAP Area of Residence	C11A_COUNTY	County lived in when child was born
			C11A_STATE	State lived in when child was born
			C11_ZIPCODE	Zip code live in when child was born
			C19_CITY	City currently live in
			C19_CITYLIMITS	Currently live within the city limits
			C19_COUNTY	County currently live in
			C19_STATE	State currently live in
			C19_ZIPCODE	Zip code of current residence
			MR4	Area code of call back telephone number
			CEN_REG	Census region based on true state of residence
			ESTIAP06	Estimation IAP area of residence
			IAPID06	Sampling AIP area of telephone number
			MSA	Original MSA status based on telephone exchange of HH
			ORIGIAP	Original 1995-2004 IAP area of residence
			RESFIPS	Original state and county FIPS code for current residence
			STATE	True state of residence (state FIPS code)
			TRUEIAP06	True IAP area of residence
2005	CEN_REG	Census Region	AREACODE	Area code of respondent
	STATE	State FIPS	C11A_CITY	City lived in when child was born
	ESTIAP05	Estimation IAP Area of Residence	C11A_COUNTY	County lived in when child was born
			C11A_STATE	State lived in when child was born
			C11_ZIPCODE	Zip code live in when child was born
			C19_CITY	City currently live in
			C19_CITYLIMITS	Currently live within the city limits
			C19_COUNTY	County currently live in
			C19_STATE	State currently live in
			C19_ZIPCODE	Zip code of current residence
			MR4	Area code of call back telephone number
			CEN_REG	Census region based on true state of residence
			ESTIAP	Estimation IAP area of residence
			IAPID	Sampling AIP area of telephone number
			MSA	Original MSA status based on telephone exchange of HH
			ORIGIAP	Original 1995-2004 IAP area of residence
			RESFIPS	Original state and county FIPS code for current residence
			STATE	True state of residence (state FIPS code)
			TRUEIAP	True IAP area of residence
2004	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MEST_STATUS	New MSA status based on revised OMB classification
	CEN_REG	Census region	MET_STATUS	New MCSA status based on revised OMB classif.
			MSA	MSA based on telephone exchange of HH
			CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
2003	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
2002	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
2001	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
2000	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
1999	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
1998	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
1997	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
1996	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)
1995	ITRUEIAP	IAP Area of Current Residence	C19_A	Zip code of residence
	STATE	State FIPS code	MSA	MSA based on telephone exchange of HH
	CEN_REG	Census region	CEN_REG	Census region based on state
			IAPID	Sample IAP area of telephone number
			ITRUEIAP	IAP area of residence
			IRESFIPS	State and county FIPS code for current residence
			STATE	State of residence (state FIPS code)

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Page last reviewed: November 3, 2009
Page last updated: November 3, 2009
Content source:
- CDC/National Center for Health Statistics