Table 1.
Characteristic | Total No. (%) (N = 1603) |
No. (%) Norovirus-positive (n = 103) |
Univariate OR (95% CI) | P Value |
---|---|---|---|---|
Age category, y | ||||
18–44 | 256 (16) | 21 (8) | Ref. | … |
45–64 | 704 (44) | 42 (6) | 0.71 (.41–1.22) | .218 |
65–84 | 556 (35) | 32 (6) | 0.68 (.39–1.21) | .192 |
≥85 | 83 (5) | 8 (10) | 1.19 (.51–2.81) | .685 |
Not provided | 4 (<1) | 0 (0) | NA | NA |
Race | ||||
White | 752 (47) | 62 (8) | Ref. | … |
African-American | 689 (43) | 32 (5) | 0.54 (.35–.84) | .006 |
Othera | 162 (10) | 9 (6) | 0.66 (.32–1.36) | .257 |
Sex | ||||
Male | 1443 (90) | 93 (6) | 1.01 (.52–1.99) | .971 |
Female | 157 (10) | 10 (6) | … | … |
Not provided | 3 (<1) | 0 (0) | Ref. | … |
Setting | ||||
Outpatient | 788 (49) | 57 (7) | 1.30 (.87–1.95) | .195 |
Inpatient | 815 (51) | 46 (6) | Ref. | … |
Site | ||||
A (Bronx) | 410 (26) | 25 (6) | 1.39 (.78–2.47) | .261 |
B (Houston) | 388 (24) | 38 (10) | 2.33 (1.37–3.95) | .002 |
C (Los Angeles) | 267 (17) | 16 (6) | 1.37 (.71–2.62) | .348 |
D (Atlanta) | 538 (34) | 24 (5) | Ref. | … |
Surveillance year (November–October) | ||||
2011–2012 | 410 (26) | 36 (8) | 2.48 (1.29–4.76) | .007 |
2012–2013 | 363 (23) | 18 (5) | 1.39 (.67–2.87) | .382 |
2013–2014 | 472 (29) | 37 (8) | 2.26 (1.18–4.31) | .014 |
2014–2015 | 358 (22) | 13 (4) | Ref. | … |
Clinical symptoms | ||||
Vomiting | 556 (35) | 65 (12) | NA | … |
Diarrhea | 1545 (97) | 101 (7) | NA | … |
Abbreviations: CI, confidence interval; NA, not applicable; OR, odds ratio.
aIncludes 21 Asian/Pacific Islanders, 8 American Indian/Alaska Natives, 7 with >1 reported race, and 126 individuals with no reported race.