Codes and Frequencies
EKGYRS reports the amount of time since the last electrocardiogram. Interviewers asked, "About how long has it been since [you/person] had an electrocardiogram, or EKG, which involves placing wires on the chest and arms?"
According to the 1973 and 1982 Field Representative's Manuals, this question was part of a survey section dealing with the use of preventive care services. For the preventive care supplement, in both 1973 and 1982, interviewers were directed to interview persons directly rather than relying on proxy reporting; see CXRAYRS for more information.
Other variables in the 1973 and 1982 surveys that report time since specific types of preventive care include: CXRAYRS (for chest x-ray), GLAUCTESTYRS (for glaucoma test), and EYEXAMYRS (for vision test).
For 1973, responses to the question on years since last EKG were topcoded at 10+ years in the NHIS public use files created by the National Center for Health Statistics. Single year responses up to 40 years for years since last EKG are available for 1982, in EKGYREX.
While the question wording and universe for EKGYRS were identical for 1973 and 1982, there were differences in how responses to this question were collected and recorded.
The 1973 Manual provided the following instruction to interviewers on how to record answers to the question for EKGYRS:
By contrast, the 1982 Manual encouraged interviewers to press for exact responses and record fractions of years, as follows:
- 1973; 1982: Persons age 40+.
- 1973, 1982
- 1973, 1982 : PERWEIGHT