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Number exams for A1c hemoglobin, past 6 months


DIA1CEXAM6M is a 2-digit numeric variable equal to the number of tests the person has had in the past 6 months.

96: Not in Universe
98: Unknown - not ascertained
98: Unknown - don't know or refused


For adults who have confirmed diabetes and who reported that they had heard of glycosylated hemoglobin or hemoglobin A1C (DIA1CKNOW), DIA1CEXAM6M reports the number of times a doctor, nurse, or other health professional has checked the person for glycosylated hemoglobin, or hemoglobin A1c.

The hemoglobin A1C test is a blood test, generally performed in a lab, which provides information about how high an individual's blood sugar level has been over the past 3 months. The American Diabetes Association recommends that diabetics have the hemoglobin A1C test performed every 3 months.

In 1999 and 2003, persons with diabetes were asked for the number of such tests in the past 12 months (DIA1CEXAMYR).

This variable was included in the 1989 Diabetes supplement. For related variables, please use the IPUMS NHIS search function and drop down menus.


There are no comparability issues with this variable. For the number of hemoglobin A1c tests in the past year, please see (DIA1CEXAMYR).


  • 1989: Persons age 18+ with confirmed diabetes who have had heard of hemoglobin A1c.


  • 1989