2021 National Health Interview Survey (NHIS) Data

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Current Asthma1 Population Estimates — in Thousands2 by Age, United States: National Health Interview Survey, 2021

Table 3-1
Current Asthma1 Population Estimates–in Thousands2
by Age, United States: National Health Interview Survey, 2021
Characteristic3 All Ages
Total		 Children
Age <18		 Adults
Age 18+		 0–4 5–14 15–19 20–24 25–34 35–64 65+
Total: 24,964 4,675 20,288 370 3,124 1,862 1,970 3,508 10,080 4,034
   Male 10,274 2,695 7,579 204 1,883 1,008 869 1,569 3,568 1,168
   Female 14,690 1,980 12,710 165 1,241 854 1,101 1,939 6,512 2,866
White Non–Hispanic: 15,138 2,114 13,024 124 1,381 991 997 1,989 6,633 3,013
   Male 6,046 1,144 4,902 85* 760 487 429 889 2,550 841
   Female 9,091 970 8,122 39* 621 504 568 1,101 4,084 2,172
Black Non–Hispanic: 4,236 1,103 3,133 103* 732 430 308 769 1,492 399
   Male 1,752 599 1,153 62* 408 249 172* 345 444 73*
   Female 2,483 504 1,979 ** 324 182 136* 424 1,049 326
Other Non–Hispanic: 2,094 449 1,645 67* 290 136 287 245 732 331
    Male 904 287 617 ** 207 115 117* 87* 218 150*
    Female 1,191 162 1,028 58* 83* ** 170* 158 514 180
Hispanic: 3,496 1,009 2,487 76* 720 304 378 504 1,222 291
    Male 1,572 665 907 48* 508 158 150* 247 356 104*
    Female 1,925 344 1,580 ** 212 147 228 257 866 187
Mexican/Mexican–American:4 1,726 628 1,098 ** 487 189 144* 200 594 104*
    Male 906 436 470 ** 350 119 90* 110* 182 **
    Female 820 192 628 ** 137 70* ** 90* 412 56*
Other Hispanic:4 1,681 357 1,324 61* 226 106* 234 304 569 182
    Male 626 215 411 ** 154 35* ** 137* 154* **
    Female 1,055 141* 914 ** 71* 70* 174* 167 415 131
Region:
    Northeast 4,102 562 3,541 62* 329 235 445 534 1,774 718
    Midwest 5,744 1,111 4,633 124* 717 495 388 836 2,339 847
    South 9,052 1,925 7,128 161 1,343 680 715 1,290 3,419 1,441
    West 6,065 1,078 4,987 ** 735 453 422 848 2,548 1,029
Ratio of Family Income to Poverty Threshold:5
    0–0.99 3,813 1,106 2,707 86* 753 383 370 486 1,305 431
    1.00–2.49 7,265 1,410 5,854 124* 986 466 659 936 2,762 1,327
    2.50–4.49 6,156 1,025 5,130 77* 665 466 480 1,031 2,398 1,039
    4.50 and above 7,731 1,134 6,597 83* 720 547 461 1,056 3,616 1,238

Source: National Health Interview Survey, National Center for Health Statistics, CDC
Compiled 3/3/2023

1Persons who answered “yes” to the questions: “Have you EVER been told by a doctor or other health professional that you had asthma?” and “Do you still have asthma?”
2Multiply numbers by a thousand.
3Numbers within selected characteristics may not sum to total due to rounding.
All relative standard errors are <30% unless otherwise indicated.
*Relative standard error of the estimate is 30%–50%; the estimate is unreliable.
**Suppressed if relative standard error of the estimate exceeds 50% or if standard error is missing or 0.
4As a subset of Hispanic.
5Missing responses imputed. See NHIS “Imputed Income Technical Document”: https://ftp.cdc.gov/pub/Health_Statistics/NCHS/Dataset_Documentation/NHIS/2020/NHIS2020-imputation-techdoc-508.pdf.
Notes: Sex determined by “male” or “female” response to question: “Are you male or female?” Additional information on methods and variable description available at: https://www.cdc.gov/asthma/nhis/default.htm.

Asthma and Community Health Branch
National Center for Environmental Health, Centers for Disease Control and Prevention

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