HYSTDYR is a 4-digit-numeric variable.

0: Not in universe
1931: 1931 or earlier
9996: Time period format
9997: Unknown-refused
9998: Unknown-not ascertained
9999: Unknown-don't know

Description

For sample female adults aged 18 and older who have had a hysterectomy, HYSTDYR reports the year of the hysterectomy. Researchers may want to use HYSTDYR in conjunction with HYSTDMO, which reports the corresponding month.

HYSTDYR was first introduced in 2000.

Comparability

There are no comparability issues with this variable.

Universe

Availability

• 2000, 2005, 2010, 2015

Weights

• 2000, 2005, 2010, 2015 : SAMPWEIGHT