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. 2022 Mar 16;60(3):e02070-21. doi: 10.1128/jcm.02070-21

TABLE 1.

Study population characteristics

Overall (976) Influenza negative (774) Influenza positive (202) P
N (%)
Sex 0.107
 Female 759 (77.8) 612 (79.1) 147 (72.8)
 Nonbinary 2 (0.2) 2 (0.3) 0 (0.0)
Race/Ethnicity* 0.014
 Hispanic 60 (6.1) 46 (5.9) 14 (6.9)
 White 901 (92.3) 717 (92.6) 184 (91.1)
 Black/African American 41 (4.2) 30 (3.9) 11 (5.4)
 Asian 43 (4.4) 35 (4.5) 8 (4.0)
 American Indian, Alaska Native, Hawaiian, or Pacific Islander 16 (1.6) 12 (1.7) 3 (1.5)
 Other 12 (1.2) 11 (1.4) 1 (0.5)
Median age [IQR] 36.00
[31.00, 43.00]
36.00
[31.00, 42.00]
36.00
[31.00, 44.00]
0.446
Education 0.535
 HS, GED, or less 46 (4.7) 35 (4.5) 11 (5.4)
 Some college 206 (21.1) 170 (22.0) 36 (17.8)
 Bachelors or equivalent 484 (49.6) 373 (48.2) 111 (55.0)
 Graduate/Masters/Doctorate 236 (24.2) 193 (24.9) 43 (21.3)
 No answer 4 (0.4) 3 (0.4) 1 (0.5)
Income 0.920
 <35k 157 (16.1) 124 (16.0) 33 (16.3)
 35k to 50k 150 (15.4) 121 (15.6) 29 (14.4)
 50k to 75k 227 (23.3) 179 (23.1) 48 (23.8)
 75k to 100k 154 (15.8) 120 (15.5) 34 (16.8)
 100k+ 241 (24.7) 195 (25.2) 46 (22.8)
 No answer 47 (4.8) 35 (4.5) 12 (5.9)
Child 0 to 5 in daycare or preschool** 160 (61.3α) 119 (57.5) 41 (75.9) 0.020
Received 20192020 flu vaccine 500 (51.2) 399 (51.6) 101 (50) 0.754
Known flu diagnosis in household 0.035
 No 820 (84.0) 661 (85.4) 159 (78.7)
 Yes 50 (5.1) 32 (4.1) 18 (8.9)
 Did not know 10 (1.0) 8 (1.0) 2 (1.0)
 No answer 96 (9.8) 73 (9.4) 23 (11.4)
Suspected exposure to flu <0.001
 No 180 (18.4) 163 (21.1) 17 (8.4)
 Yes 391 (40.1) 283 (36.6) 108 (53.5)
 Did not know 404 (41.4) 327 (42.2) 77 (38.1)
 No answer 1 (0.1) 1 (0.1) 0 (0.0)
Reports at least one comorbidity 694 (71.1) 550 (71.1) 144 (71.3) 1

*Totals may be greater than total sample size as multi-select was offered; **261 participants reported a 0 to 5-year-old in the household, of which 207 were negative for influenza and 54 were positive for influenza.