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Bảng 9.1. Danh sách các biến được thu thập

                No.       Variables                         Variable Descriptions
              FARM  INFORMATION

                1         Address/name                      text
                2         Longitude                         long decimal
                3         Latitude                          long decimal
              GEOGRAPHICIAL FACTOR

                4         Distance between farm and nearest hatchery    Continuous value
                5         Distance between farm and nearest river   Continuous value
                6         Distance between farm and nearest affected farm   Continuous value
              ENVIRONMENTAL  FACTOR

                7         pH                                Continuous value, >7
                8         Temperature                       Continuous value, >30
                9         NO2                               Continuous value
                10        NH4                               Continuous value
                11        Salinity                          Continuous value

              CLINICAL SIGN

                12        Discontinuous gut                 1: Yes; 0: No
                13        Empty gut                         1: Yes; 0: No
                14        Food in gut                       1: Yes; 0: No
                15        Yellow liquid in gut              1: Yes; 0: No
                16        Soft shell                        1: Yes; 0: No
                17        Hepatopancreas atrophy            1: Yes; 0: No
                18        Hepatopancreas pale               1: Yes; 0: No
                19        Slow growth                       1: Yes; 0: No
                20        White feces                       1: Yes; 0: No
                21        White spot                        1: Yes; 0: No
                22        Vermiform                         1: Yes; 0: No
                23        Gregarine                         1: Yes; 0: No
              DISEASE
                24        WSSV                              1: Yes; 0: No
                25        EHP                               1: Yes; 0: No
                26        AHPND                             1: Yes; 0: No














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