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COLSIGEV
Ever had colonoscopy, sigmoidoscopy, or both

Codes and Frequencies



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Description

For sample adults age 40 or older who have had either a colonoscopy or sigmoidoscopy (COLORECTEV), COLSIGEV indicates whether the person has ever had a colonoscopy, sigmoidoscopy, both, or neither.

 

The 2019 NHIS questionnaire offers the following definition of the two procedures:

"For a colonoscopy, the doctor checks the entire colon, and you are given medication through a needle in your arm to make you sleep, and told to have someone take you home. For a sigmoidoscopy, the doctor checks only part of the colon and you are fully awake."

To increase comparability over time, IPUMS NHIS staff constructed COLSIGEV for 2010, 2013, 2015, and 2018 using responses to COLEV and SIGEV. Those who responded "yes" to COLEV only were coded to "Colonoscopy," those who responded "yes" to SIGEV only were coded to "Sigmoidoscopy," those who responded "yes" to COLEV and SIGEV were coded to "Both," and those who responded "no" to COLEV and SIGEV were coded to "Neither."

Comparability

This variable is completely comparable prior to 2019. The NHIS questionnaire was substantially redesigned in 2019 to introduce a different data collection structure and new content. For more information on changes in terminology, universes, and data collection methods beginning in 2019, please see the user note.

Universe

  • 2010; 2013; 2015; 2018: Sample adults age 40+.
  • 2019: Sample adults age 40+ who have had either a colonoscopy or sigmoidoscopy (COLORECTEV).

Availability

  • 2010, 2013, 2015, 2018-2019

Weights