California Cancer Reporting System Standards, Volume III

GIS Coordinate Quality

IDENTIFIERS

CCR ID	NAACCR ID
E1046	366

DESCRIPTION

Code indicating the basis of assignment of latitude and longitude coordinates for an individual record from an address.

This data item is helpful in identifying cases that were assigned coordinates based on incomplete information, post office boxes, or rural routes.

Most of the time, this information is provided by geocoding software. Alternatively, a central registry staff member manually assigns the code. Codes are hierarchical, with lower numbers having priority.

LEVELS

Tumors

LENGTH

ALLOWABLE VALUES

ER1017 GIS Coordinate Quality

Codes

00	Coordinates derived from local government-maintained address points, which are based on property parcel locations, not interpolation over a street segment‘s address range
01	Coordinates assigned by Global Positioning System (GPS)
02	Coordinates are match of house number and street, and based on property parcel location
03	Coordinates are match of house number and street, interpolated over the matching street segment‘s address range
04	Coordinates are street intersections
05	Coordinates are at mid-point of street segment (missing or invalid building number)
06	Coordinates are address ZIP code+4 centroid
07	Coordinates are address ZIP code+2 centroid
08	Coordinates were obtained manually by looking up a location on a paper or electronic map
09	Coordinates are address 5-digit ZIP code centroid
10	Coordinates are point ZIP code of Post Office Box or Rural Route
11	Coordinates are centroid of address city (when address ZIP code is unknown or invalid, and there are multiple ZIP codes for the city)
12	Coordinates are centroid of county
98	Latitude and longitude are assigned, but coordinate quality is unknown
99	Latitude and longitude are not assigned, but geocoding was attempted; unable to assign coordinates based on available information
Blank	Blank GIS Coordinate Quality not coded

SOURCE

None

UPDATE

Whenever Latitude and/or Longitude is changed, GIS Coordinate Quality must be changed accordingly:

If Latitude or Longitude is blank, then GIS Coordinate Quality must be set to blank.
If Latitude and Longitude are tracted, then GIS Coordinate Quality must have a value of 00-98.

CONSOLIDATED DATA EXTRACT

None

INTERFIELD EDITS

None

HISTORICAL CHANGES

2012	Data Changes: New data item added to V3 for 2012, NAACCR Version 12.2.