Footnotes for Asthma Prevalence

For asthma period prevalence estimates through 1996:

Source: National Health Interview Survey, National Center for Health Statistics, Centers for Disease Control and Prevention, 19_ _. Asthma prevalence is estimated by the question: "During the past 12 months, did anyone if the family have asthma? If yes, who?"

For lifetime diagnosis of asthma estimates beginning in 1997:

Source: National Health Interview Survey, National Center for Health Statistics, Centers for Disease Control and Prevention, 19_ _. Prevalence of lifetime asthma diagnosis is estimated by the question: "Has a doctor or other health professional ever told you that you had asthma?"

For current asthma prevalence estimates beginning in 2001:

Source: National Health Interview Survey, National Center for Health Statistics, Centers for Disease Control and Prevention, 20_ _. Prevalence of current asthma is estimated by two questions: "Has a doctor or other health professional ever told you that you had asthma?" and "Do you still have asthma?"

For asthma attack prevalence estimates beginning in 1997:

Source: National Health Interview Survey, National Center for Health Statistics, Centers for Disease Control and Prevention, 19_ _. Asthma attack prevalence is estimated by two questions: "Has a doctor or other health professional ever told you that you had asthma?" and "During the past 12 months, have you had an episode of asthma or asthma attack?" Note that this estimate measures how many people had at least one attack in the previous year, not the number of asthma attacks.

Developed by the FLGA
March 26, 2002