Codes and Frequencies
For sample persons ages 40 and over in 1998, and half of sample persons ages 40 and over who have heard of a digital rectal exam (DRXHREV="2") in 1987 and 1992, DRXEV reports whether the respondent has ever had a digital rectal exam.
In the 1987 and 1992 surveys, DRXEV was only asked of those persons who previously indicated that they have heard of a digital rectal exam. In 1998, the question was asked without a screener question. This change in universe affects comparability between samples. Data users wishing to compare 1987 data to 1998 data are advised to use DRXEVR1, which recodes "never heard of digital rectal exam" as "no." Data users wishing to compare 1992 data to 1998 data may use DRXEVR2, which recodes responses to DRXHREV and DRXEV into more comparable outputs.
Changes in survey design (i.e. sampling frequency) affect raw frequencies but do not affect comparability between samples. As always, data users should apply prescribed IPUMS NHIS weights.
- 1987: Half of sample adults age 40+ (excluded from CAEP supplement) who have heard of digital rectal exam.
- 1992: Half of sample adults age 40+ (excluded from CAEP supplement) who have heard of digital rectal exam.
- 1998: Sample adults age 40+.
- 1987, 1992, 1998
- 1987, 1992, 1998 : SAMPWEIGHT