Table 1.
Characteristic | Interviewed b | Not interviewed b | P value c |
---|---|---|---|
Total case-patients | 6659 (79.0) | 1773 (21.0) | — |
Age, y, mean (SD) | 36 (23.3) | 38 (22.7) | .001 |
Age group, y | <.001 | ||
<18 | 1643 (24.7) | 336 (19.0) | |
18-29 | 1130 (17.0) | 348 (19.6) | |
30-39 | 978 (14.7) | 285 (16.1) | |
40-49 | 832 (12.5) | 205 (11.6) | |
50-59 | 774 (11.6) | 225 (12.7) | |
60-69 | 688 (10.3) | 199 (11.2) | |
≥70 | 614 (9.2) | 175 (9.9) | |
Sex/gender | <.001 | ||
Another gender | 5 (0.1) | 1 (<0.1) | |
Female | 3400 (51.1) | 793 (44.7) | |
Male | 3254 (48.9) | 979 (55.2) | |
Ethnicity d | <.001 | ||
Hispanic or Latino/a | 1408 (22.4) | 355 (27.7) | |
Non-Hispanic or Latino/a | 4886 (77.6) | 927 (72.3) | |
Missing or unknown | 365 (5.5) | 491 (27.7) | |
Race d | .003 | ||
American Indian or Alaska Native | 28 (0.4) | 11 (0.8) | |
Asian | 111 (1.7) | 12 (0.9) | |
Black or African American | 220 (3.5) | 68 (5.2) | |
Native Hawaiian or Other Pacific Islander | 51 (0.8) | 5 (0.4) | |
White | 5443 (85.5) | 1112 (84.8) | |
Another race e | 353 (5.6) | 75 (5.7) | |
Multiracial f | 158 (2.5) | 29 (2.2) | |
Missing or unknown | 295 (4.4) | 461 (26.0) | |
Season reported | .17 | ||
Spring (March–May) | 1350 (20.3) | 363 (20.5) | |
Summer (June–August) | 2547 (38.3) | 634 (35.8) | |
Fall (September–November) | 1837 (27.6) | 502 (28.3) | |
Winter (December–February) | 925 (13.9) | 274 (15.5) | |
Experiencing homelessness | <.001 | ||
Yes | 11 (0.2) | 13 (0.7) | |
No | 1728 (26.0) | 239 (13.5) | |
Missing or unknown | 4920 (73.9) | 1521 (85.8) | |
Living in institution | <.001 | ||
Yes | 100 (1.5) | 35 (2.0) | |
No | 5355 (80.4) | 848 (47.8) | |
Missing or unknown | 1204 (18.1) | 890 (50.2) | |
Hospitalized | <.001 | ||
Yes | 1196 (18.0) | 349 (19.7) | |
No | 5411 (81.3) | 940 (53.0) | |
Missing or unknown | 52 (0.8) | 484 (27.3) | |
Geographic location | <.001 | ||
Rural/frontier | 878 (13.2) | 565 (31.9) | |
Urban | 5781 (86.8) | 1208 (68.1) | |
Resides in a FoodNet catchment area g | <.001 | ||
Yes | 3978 (59.7) | 559 (31.5) | |
No | 2681 (40.3) | 1214 (68.5) | |
No. of contact attempts, mean (SD) | 1.8 (1.2) | 3.1 (1.5) | <.001 |
No. of days, mean (SD) | |||
Specimen collection to date reported to public health | 4.0 (5.6) | 5.2 (9.7) | <.001 |
Date reported to public health to first contact attempt | 2.8 (3.3) | 4.6 (6.9) | <.001 |
Abbreviation: FoodNet, Foodborne Diseases Active Surveillance Network.
Data source: Colorado Department of Public Health and Environment’s Colorado Electronic Disease Reporting System. 9
All values are number (column percentage) unless otherwise indicated. Percentages may not sum to 100 because of rounding.
Determined by 2-tailed t test (continuous data), Pearson χ2 test (categorical data), or Fisher exact test (categorical data with ≤20% of expected cell counts <5); P < .05 considered significant.
The denominator for race and ethnicity percentages is [total case-patients – missing] for known subgroups and [total case-patients] for missing or unknown subgroups.
Includes case-patients who self-identified as another race not listed on the interview form.
Includes case-patients who self-identified as >1 race.
Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson counties.