Table 2.
Associations between age at asthma onset and the percentage of days in the past 30 that respondents reported experiencing any asthma symptoms or difficulty staying asleep because of asthma symptoms: 2010 BRFSS Adult Asthma Call-back Survey.
| Age at asthma onset, in years | Actual samplea | Weighted population estimate | Percentage of the past 30 days with any asthma symptoms | Percentage of the past 30 days that asthma symptoms made it difficult to stay asleep | |||
|---|---|---|---|---|---|---|---|
|
|
|
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| No. | No. | Percent (95% CI) | Mean (SE)b | PD (95% CI)c | Mean (SE) | PD (95% CI) | |
| <1 | 386 | 711,587 | 4.1 (3.2, 4.9) | 38.7 (4.7) | 14.8 (5.4, 24.1) | 19.4 (3.6) | 8.1 (1.1, 15.0) |
| 1–4 | 667 | 1,430,279 | 8.1 (6.9, 9.4) | 30.0 (2.8) | 7.1 (0.4, 13.8) | 9.8 (1.9) | 0.4 (−4.3, 5.1) |
| 5–9d | 1189 | 2,420,910 | 13.8 (12.2, 15.4) | 20.7 (1.9) | 0.0 | 8.4 (1.4) | 0.0 |
| 10–14 | 1031 | 2,488,065 | 14.2 (12.4, 15.9) | 24.0 (2.3) | 2.6 (−3.4, 8.5) | 9.8 (1.4) | 0.9 (−3.2, 4.9) |
| 15–19 | 714 | 1,273,925 | 7.3 (6.1, 8.4) | 31.2 (2.6) | 7.8 (1.7, 14.0) | 12.2 (1.8) | 2.3 (−2.0, 6.6) |
| 20–24 | 737 | 1,123,835 | 6.4 (5.4, 7.4) | 33.1 (3.2) | 9.2 (2.0, 16.4) | 12.1 (2.5) | 2.7 (−2.5, 8.0) |
| 25–29 | 756 | 1,127,007 | 6.4 (5.4, 7.5) | 29.6 (2.3) | 4.9 (−1.0, 10.7) | 14.4 (3.4) | 5.3 (−0.9, 11.5) |
| 30–34 | 879 | 1,303,050 | 7.4 (6.5, 8.4) | 31.4 (2.5) | 6.2 (−0.4, 12.7) | 12.3 (1.7) | 2.4 (−2.3, 7.2) |
| 35–39 | 855 | 1,167,378 | 6.7 (5.6, 7.8) | 32.9 (3.7) | 7.0 (−0.3, 14.4) | 16.0 (3.5) | 5.6 (−0.5, 11.8) |
| 40–44 | 1074 | 1,237,980 | 7.1 (6.2, 7.9) | 36.7 (2.3) | 11.0 (5.0, 17.1) | 13.6 (1.7) | 4.6 (0.3, 8.8) |
| 45–49 | 832 | 852,792 | 4.9 (4.2, 5.5) | 40.1 (2.7) | 13.3 (6.3, 20.3) | 13.3 (2.0) | 4.1 (−0.9, 9.1) |
| 50–54 | 987 | 866,012 | 4.9 (4.3, 5.6) | 36.6 (2.8) | 8.9 (2.2, 15.7) | 12.4 (1.7) | 2.8 (−1.6, 7.1) |
| 55–59 | 672 | 503,069 | 2.9 (2.4, 3.3) | 39.4 (3.2) | 10.1 (2.0, 18.2) | 14.4 (2.4) | 4.2 (−1.2, 9.6) |
| 60–64 | 591 | 418,508 | 2.4 (2.0, 2.7) | 33.2 (2.9) | 4.1 (−3.5, 11.7) | 7.1 (1.2) | −2.1 (−6.5, 2.3) |
| 65–69 | 355 | 242,025 | 1.4 (1.1, 1.7) | 41.3 (3.6) | 12.5 (2.9, 22.1) | 10.4 (2.4) | 2.4 (−4.3, 9.1) |
| 70–74 | 263 | 198,606 | 1.1 (0.9, 1.4) | 36.6 (4.1) | 8.4 (−2.5, 19.3) | 7.7 (2.1) | 0.6 (−5.5, 6.7) |
| 75–92 | 228 | 187,079 | 1.1 (0.8, 1.3) | 42.7 (4.8) | 14.3 (2.2, 26.4) | 9.2 (3.3) | 3.3 (−4.7, 11.4) |
a
Unweighted sample.
b
Mean percentage, with standard error (SE).
c
Percent difference (PD), adjusted for age, race/ethnicity, sex, smoking status, time since asthma onset, history of COPD, and history of angina or coronary heart disease.
d
Referent category.