Change in the Prevalence of Testing for Latent Tuberculosis Infection in the United States: 1999–2012

Table 1

Latent TB infection (LTBI) testing questions contained in the 1999-2000 and 2011-2012 National Health and Nutrition Examination Surveys (NHANES).

NHANES cycle	LTBI testing question
1999-2000	“Have you ever been given a TB or tuberculosis skin test? For one version of this test, a doctor or nurse presses a plastic button with little metal prongs down your arm. That kind is called a tine test. For another version of this test, they use a small shot needle to stick a few drops of tuberculin or PPD just under the skin.”
2011-2012	“The next questions are about being tested for tuberculosis. The tests could be a skin test with a needle just under your skin, a blood test, or a plastic button with metal prongs pressed on your arm called a tine test. Here are pictures of what the skin test and tine test look like. Have you ever been tested for TB? Which test or tests did you receive, the needle under the skin, the blood test, or the tine test?”