Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The regional factor affecting HEV seroprevalence. N denotes the number of animals, p—p-value and in the brackets [the chi-square statistic for each cell].
| Region | Positive HEV IgG | Negative HEV IgG | Totals | p |
|---|---|---|---|---|
| Southern Bulgaria | 113 (110.88) [0.04] | 32 (34.12) [0.13] | 145 | 0.58 |
| Northern Bulgaria | 147 (149.12) [0.03] | 48 (45.88) [0.1] | 195 | 0.58 |
