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Framework that allows defining file formats (layouts) and use them to read and write data files.

There is a newer version: 6.1


    
        Item #
        Length
        Source of Standard
        Year Implemented
        Version Implemented
        Year Retired
        Version Retired
    
    
        363
        1
        Census
        2011
        12.1
        
        
    



NAACCR XML: Tumor.censusBlockGroup2010




Description
This field is provided for coding the block group of patient’s residence at time of diagnosis, as defined by the 2010 Census.
Rationale
A block group is a subdivision of a census tract designed to have an average of 1500 people, versus a census tract's average of 4500 people. All land area in the United States is described by a census block group in the 2010 Census. The Census Bureau publishes detailed population and socioeconomic data at this level. Block groups thus offer a high level of specificity for geographical and socioeconomic analyses.

A block group has no meaning in the absence of a census tract. Refer to Census Tr Certainty 2010 [367] to ascertain basis of assignment of Census Block Group 2010.

Comment
    
Numerous registries find the distinction between “attempted, could not be determined” (zero) and “not coded” (blank) to be useful for geocoding planning purposes.


    Note: The values 1 through 9 are nominal, with no hierarchy of values. This number determines the first digit of all the blocks which comprise the block group; for instance, census block group 3 would contain blocks numbered 3000 to 3999.

Codes

    
        
            0
            Census block group assignment was attempted, but the value could not be determined
        
        
            1-9
            Census block group values as defined by the Census Bureau
        
        
            Blank
            Census Block Group 2010 not coded

0	Census block group assignment was attempted, but the value could not be determined
1-9	Census block group values as defined by the Census Bureau
Blank	Census Block Group 2010 not coded