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Codes and Frequencies

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For sample adults who responded, "Yes" to the question, "Have you ever heard of tuberculosis?" (TBHEARD), TBCHANCE reports the respondent's perceived probability of contracting tuberculosis.

Interviewers asked, "What are your chances of getting TB? Would you say high, medium, low, or none?" In addition, "Already have TB" was a recognized possible response on the survey form.


TBCHANCE is completely comparable over time.


  • 2000-2010: Sample adults age 18+ who had heard of TB and reported the amount they knew about TB.


  • 2000-2010