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Time since colorectal exam: Time period

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For sample adults age 40 and older who ever had a colorectal screening exam and reported the time since her/his more recent colorectal exam as a number associated with a time period, CRETP reports the time period component of the person's response. Users should combine this variable with the variable reporting the numerical component associated with the recency of last colorectal exam to define the time since the sample adult's most recent exam. Time periods include: days ago, weeks ago, moths ago or years ago.


There are no comparability issues with this variable.


  • 2000; 2003; 2005; 2008: Sample adults age 40+ who ever had colorectal screening exam and answered in number and time period format.


  • 2000, 2003, 2005, 2008