Table 1 Adult self-reported diagnosis of hay fever from 2013 to 2018 by frequency (in thousands)

Total adult survey respondents

237,394

239,688

242,501

245,142

246,657

249,456

Total cases

18,638 (7.6)

19,089 (7.7)

19,976 (7.9)

16,042 (6.2)

19,883 (7.7)

19,174 (7.3)

Sex

 Male

7811 (6.6)

7824 (6.6)

7704 (6.3)

6601 (5.4)

8428 (6.8)

7980 (6.4)

 Female

10,827 (8.5)

11,265 (8.7)

12,272 (9.4)

9441 (7.1)

11,455 (8.5)

11,193 (8.3)

 Missing values

1

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Age group (years)

 18–44

6341 (5.7)

6315 (5.6)

6602 (5.9)

5003 (4.4)

6048 (5.3)

5778 (5.0)

 45–64

8848 (10.8)

8985 (10.9)

9245 (11.1)

7411 (8.9)

9204 (11.0)

8986 (10.8)

 65–74

2123 (8.5)

2392 (9.1)

2723 (10.0)

2451 (8.6)

3016 (10.3)

3018 (9.8)

 75 and over

1326 (7.3)

1397 (7.5)

1405 (7.3)

1177 (6.0)

1614 (8.0)

1392 (6.8)

 Missing values

1

1

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Race

 White

15,766 (8.0)

15,851 (8.0)

16,809 (8.4)

13,017 (6.4)

16,589 (8.2)

15,483 (7.6)

 Black or African American

1535 (5.3)

1818 (6.0)

1822 (6.0)

1532 (5.0)

1490 (4.8)

1729 (5.5)

 American Indian or Alaska Native

204 (10.6)

165 (8.1)

120 (5.0)

167 (6.9)

139 (*)

238 (8.5)

 Asian

769 (5.9)

785 (5.8)

835 (6.0)

874 (5.9)

1112 (7.1)

1116 (6.9)

 Native Hawaiian or Other Pacific Islander

*(*)

*(9.0)

*(*)

*(*)

*(*)

*(*)

 Two or more races

355 (9.5)

447 (12.0)

362 (9.9)

442 (9.9)

532 (11.4)

581 (10.5)

 Missing values

9

23

28

177

21

27

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Hispanic or Latino Origin:

 Hispanic or Latino origin

2012 (6.1)

1957 (5.8)

730 (4.6)

1764 (4.7)

1995 (5.4)

1589 (4.3)

 Not Hispanic or Latino

16,626 (7.9)

17,132 (8.0)

18,246 (8.5)

14,278 (6.5)

17,888 (8.1)

17,585 (8.0)

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Employment status

 Full-time

8925 (7.1)

9042 (7.5)

9509 (7.6)

7153 (5.6)

9227 (6.8)

9086 (9.6)

 Part-time

1690 (7.1)

2070 (7.8)

2054 (8.2)

2013 (7.3)

1980 (7.9)

2073 (11.3)

 Not employed but has worked previously

7166 (8.7)

7216 (8.3)

7440 (8.8)

5947 (6.4)

7900 (8.8)

7107 (13.4)

 Not employed and has never worked

794 (5.8)

642 (5.0)

855 (6.2)

814 (6.7)

625 (5.1)

755 (9.7)

 Missing values

63

119

118

115

151

153

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Health insurance coverage (Under 65)

 Private

10,502 (8.0)

10,938 (8.0)

11,901 (8.3)

9001 (6.3)

11,552 (8.0)

10,503 (7.2)

 Medicaid

1723 (8.9)

1692 (7.4)

1731 (6.9)

1610 (5.8)

1919 (7.5)

1718 (7.0)

 Other

949 (9.4)

893 (7.9)

990 (8.6)

868 (8.2)

879 (7.7)

1047 (9.2)

 Uninsured

1950 (5.2)

1740 (5.7)

1184 (4.9)

917 (4.2)

877 (3.8)

1466 (5.9)

 Missing values

65

37

41

18

25

30

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Health insurance coverage (65 +)

 Private

1845 (8.4)

1859 (8.2)

1778 (9.0)

1541 (7.5)

1860 (9.1)

1847 (8.4)

 Medicare and medicaid

197 (6.3)

314 (10.5)

288 (8.9)

312 (9.2)

378 (10.2)

256 (7.0)

 Medicare advantage

N/A

N/A

1062 (8.9)

888 (7.3)

1331 (9.8)

1299 (9.8)

 Medicare only

1132 (7.5)

1365 (8.7)

615 (7.6)

611 (7.2)

715 (8.4)

596 (7.3)

 Other

261 (8.5)

232 (6.8)

353 (9.0)

250 (6.3)

347 (9.5)

394 (7.5)

 Uninsured

0 (0)

*(9.0*)

*(*)

*(*)

*(*)

*(*)

 Missing values

14

19

32

116

26

18

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Poverty status

 Poor

1916 (6.9)

2046 (7.0)

1877 (6.9)

1704 (6.2)

2013 (7.6)

1653 (7.0)

 Near poor

2401 (6.3)

3027 (7.2)

2807 (6.6)

2141 (5.3)

2455 (6.1)

2460 (6.0)

 Not poor

13,024 (8.4)

13,219 (8.3)

14,506 (8.6)

11,511 (6.6)

14,328 (8.0)

14,131 (7.7)

 Missing values

1297

797

786

686

1087

930

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

Region

 Northeast

3336 (7.7)

3328 (7.6)

3194 (7.3)

2609 (5.4)

3399 (7.1)

3706 (7.9)

 Midwest

3810 (7.0)

3894 (7.0)

4101 (7.3)

3019 (5.3)

3831 (6.7)

3553 (6.1)

 South

6343 (6.9)

6674 (7.1)

6999 (7.4)

5252 (5.7)

6544 (6.9)

6362 (6.5)

 West

5149 (9.3)

5193 (9.4)

5681 (10.0)

5162 (8.6)

6109 (10.3)

5553 (9.2)

 P value

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001

 < .0001