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. 2023 Sep 8;18(9):e0291259. doi: 10.1371/journal.pone.0291259

Table 1. Characteristics of patients who completed questionnaire.

Cases
(n = 1150)
Controls
(n = 1110)
p-value**
Age
 18–24 years
 25–44 years
 45–64 years
 65–89 years

40 (3.5%)
444 (38.6%)
510 (44.3%)
156 (13.6%)

18 (1.6%)
372 (33.5%)
539 (48.6%)
181 (16.3%)
0.001
Sex (% male) 377 (32.8%) 254 (22.9%) <0.001
Race/ethnicity
 Non-Hispanic White
 Non-Hispanic Black
 Hispanic
 Asian
 Non-Hispanic other

752 (65.4%)
94 (8.2%)
223 (19.4%)
60 (5.2%)
21 (1.8%)

942 (84.9%)
32 (2.9%)
107 (9.6%)
24 (2.2%)
5 (0.5%)
<0.001
Household size
 1–2 adults, without children
 1–2 adults, with children
 3+ adults, without children
 3+ adults, with children

534 (46.4%)
313 (27.2%)
164 (14.3%)
126 (11.0%)

633 (57.0%)
288 (25.9%)
114 (10.2%)
63 (5.7%)
<0.001
Education
 Less than high school
 High school or equivalent
 Some college
 College degree

9 (0.8%)
85 (7.4%)
218 (18.9%)
828 (72.0%)

4 (0.4%)
23 (2.1%)
164 (14.8%)
915 (82.4%)
<0.001
Socioeconomic status (SES)*
 Low SES
 Medium SES
 High SES

67 (5.8%)
480 (41.7%)
576 (50.1%)

73 (6.6%)
423 (38.1%)
609 (54.9%)
0.09
Health Insurance
 No
 Yes

98 (8.5%)
1049 (91.5%)

46 (4.2%)
1061 (95.8%)
<0.001

* Neighborhood socioeconomic status (SES) was assigned based on the estimated proportion of low SES addresses in the county-specific census block group, which was defined as a function of the per capita income and percent of owner-occupied housing units.

** Characteristics of cases and controls were compared using Chi2 tests.