Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
From the 2009 National Health Interview Survey:
Have you EVER had a pneumonia vaccination? This shot is usually given only once in a person's lifetime and is different from the flu shot.
[NUMERATOR AND DENOMINATOR:]
Have you EVER been told by a doctor or other health professional that you had...
During the PAST 12 MONTHS, have you had an episode of asthma or asthma attack?
Have you EVER been told by a doctor or other health professional that you had ...
[If yes:] What kind of cancer was it?
(Other than during pregnancy,) Have you EVER been told by a doctor or health professional that you have diabetes or sugar diabetes?
During the PAST 12 MONTHS, have you been told by a doctor or other health professional that you had..
High-risk adults are defined by the Advisory Committee on Immunization Practices (ACIP). A high-risk person is a respondent who answered "yes" to one or more of the conditions listed in the Numerator and Denominator questions. Skin cancer is the only listed condition not included in the definition of high risk (skin, non-melanoma and skin, don’t know what kind).
Not all high-risk conditions for complications of influenza disease (e.g., immunocompromised) can be ascertained through the National Health Interview Survey (NHIS) and the sample size for some groups may be too small.
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