Volume 26, Number 12—December 2020
Research
Outbreak of Haff Disease along the Yangtze River, Anhui Province, China, 2016
Table 3
Analysis of probable risk factors associated with Haff disease in case–control study, Anhui, China, 2016*
Variables | Cases, N = 67 | Controls, N = 108 | p value | Multivariable OR (95% CI) |
---|---|---|---|---|
Sex | 0.033 | |||
M | 19 (28.4) | 48 (44.4) | Referent | |
F |
48 (71.6) |
60 (55.6) |
1.6 (0.9–2.7) |
|
Mean age, y (SD) |
37.3 (11.3) |
39.4 (18.9) |
0.227 |
NA |
Consumption of crayfish (SD) | 0.084 | NA | ||
No | 0 | 7 (6.5) | ||
Yes |
67 (100) |
101 (93.5) |
||
No. crayfish consumed | <0.001 | |||
1−9 | 27 (40.3) | 84 (77.8) | Reference | |
10−19 | 26 (38.8) | 12 (11.1) | 2.4 (1.4–4.2) | |
>20 |
14 (20.9) |
5 (4.6) |
2.6 (1.3–5.1) |
|
Ate liver of crayfish | <0.001 | |||
No | 3 (4.5) | 32 (29.6) | Reference | |
Yes |
64 (95.5) |
76 (70.4) |
4.0 (1.2–12.7) |
|
Alcohol consumption | 0.015 | |||
No | 51 (76.1) | 97 (89.8) | Reference | |
Yes |
16 (23.9) |
11 (10.2) |
1.6 (0.9–2.8) |
|
Fish consumption† | 0.648 | — | ||
No | 64 (95.5) | 100 (92.6) | ||
Yes | 3 (4.5) | 8 (7.4) |
*Values are no. (%) except as indicated. NA, not applicable; OR, odds ratio. SD, standard deviation. †Corrected χ2 value and p value for univariate analysis.
1These authors contributed equally to this article.