TABLE 1.
Influenza vaccination coverage* among persons aged ≥2 years, by current asthma status† and age group§ — National Health Interview Survey (NHIS), United States, 2010–11 influenza season
| All persons | Without current asthma | With current asthma | With asthma and attack in past 12 mos | With asthma and ED/urgent care visit in past 12 mos | With asthma and no attack or ED/urgent care visit in past 12 mos | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
|
|
|||||||||||||
| Age group (yrs) | No.¶ | % | (95% CI) | No. | % | (95% CI) | No. | % | (95% CI) | No. | % | (95% CI) | No. | % | (95% CI) | No. | % | (95% CI) |
| 2–17 | 6,900 | 40.2 | (38.4–42.1) | 6,186 | 38.8 | (37.0–40.8) | 714 | 52.8** | (47.3–58.6) | 268 | 49.0 | (40.9–57.7) | 118 | 50.6 | (37.8–65.0) | 328 | 57.1 | (49.0–65.5) |
| 18–49 | 14,208 | 26.1†† | (25.0–27.2) | 13,118 | 25.4†† | (24.3–26.5) | 1,090 | 34.6**†† | (30.7–38.8) | 415 | 37.3†† | (30.8–44.7) | 118 | 35.2 | (24.4–48.9) | 557 | 32.4†† | (26.9–38.8) |
| 50–64 | 6,218 | 43.7†† | (42.1–45.4) | 5,652 | 42.0†† | (40.4–43.7) | 566 | 61.7**†† | (55.8–67.7) | 240 | 59.6 | (50.0–69.3) | 74 | 62.6 | (46.7–78.5) | 252 | 63.4 | (55.1–71.7) |
| ≥65 | 5,310 | 70.2†† | (68.2–72.1) | 4,871 | 69.7†† | (67.7–71.7) | 439 | 76.5**†† | (70.2–82.2) | 133 | 74.3†† | (63.2–84.3) | 50 | 83.7†† | (68.9–94.1) | 256 | 75.8†† | (67.4–83.3) |
| Total | 32,636 | 38.5 | (37.7–39.4) | 29,827 | 37.5 | (36.6–38.4) | 2,809 | 49.6 ** | (47.0–52.3) | 1,056 | 48.5 | (44.3–52.8) | 360 | 51.3 | (44.3–58.7) | 1,393 | 50.2 | (46.3–54.2) |
Abbreviations: CI = confidence interval; ED = emergency department.
Estimates are based on interviews conducted during September 2010–June 2011 and vaccination received during August 2010–May 2011. Estimates are based on responses by an adult to the following survey questions: “During the past 12 months, has [person] had a flu shot? A flu shot is usually given in the fall and protects against influenza for the flu season,” and ”During the past 12 months, has [person] had a flu vaccine sprayed in his/her nose by a doctor or other health professional? This vaccine is usually given in the fall and protects against influenza for the flu season,” and “During what month and year did you receive your most recent flu shot?” and “During what month and year did you receive your most recent flu nasal spray?” or responses by an adult about a child to the following questions: “During the past 12 months, has [child] had a flu vaccination? A flu vaccination is usually given in the fall and protects against influenza for the flu season,” and “During what month and year did [child] receive his/her most recent flu vaccine?”
Current asthma (child): “Yes” response to the following survey questions, “Has a doctor or other health professional ever told you that [child] had asthma?” and “Does [child] still have asthma?” Current asthma (adult): “Yes” response to the following survey questions, “Have you ever been told by a doctor or other health professional that you had asthma?” and “Do you still have asthma?” Without current asthma (child): “No” response to one of the following survey questions: “Has a doctor or other health professional ever told you that [child] had asthma?” or “Does [child] still have asthma?” Without current asthma (adult): “No” response to one of the following survey questions: “Have you ever been told by a doctor or other health professional that you had asthma?” or “Do you still have asthma?” Asthma attack or episode: “Yes” response to the following survey questions, “During the past 12 months, have you [has child] had an episode of asthma or an asthma attack?” and “No” or “Don’t know/Refused” response to “During the past 12 months, have you [has child] had to visit an emergency room or urgent care center because of asthma?” ED/urgent care visit: “Yes” response to “During the past 12 months, have you [has child] had to visit an emergency room or urgent care center because of asthma?” and “Yes”, “No”, or “Don’t know/Refused” response to “During the past 12 months, have you [has child] had an episode of asthma or an asthma attack?” No asthma attack or ED/urgent care visit: “No” responses to the following survey questions: “During the past 12 months, have you [has child] had an episode of asthma or an asthma attack?” and “During the past 12 months, have you [has child] had to visit an emergency room or urgent care center because of asthma?” or “No” response to one of the two questions and “Don’t know/Refused” response to the other question.
Children were classified into age groups based on their age as of November 1, 2010. Adults were classified into age groups based on their age at time of NHIS interview.
Unweighted sample size; percentages and CIs are weighted proportions.
p<0.05 by t-test for comparisons between asthma groups (with current asthma versus without current asthma; with asthma and attack in past 12 months versus with asthma and no attack or ED/urgent care visit in past 12 months; and with asthma and ED/urgent care visit in past 12 months versus with asthma and no attack or ED/urgent care visit in past 12 months).
p<0.05 by t-test for comparisons between age groups, with persons aged 2–17 years as the reference group.