Table 6 Descriptive statistics of variables
From: Status, evaluation, and influencing factors of biosecurity levels in pig farms in China
Variables | Mean | Standard Deviation | Minimum | Maximum |
|---|---|---|---|---|
Explained variable | ||||
 Biosecurity prevention and control level (RSR) | 0.50 | 0.09 | 0.26 | 0.67 |
Explanatory variable | ||||
 Biosecurity cost | 28,725.30 | 57,694.25 | 0.40 | 409,240.50 |
The basic characteristics of farmers | ||||
 Gender (male = 1, female = 0) | 0.83 | 0.38 | 0.00 | 1.00 |
 Age | 49.10 | 8.94 | 26.00 | 77.00 |
 Years of education | 9.69 | 3.14 | 0.00 | 20.00 |
 Have you received technical training in pig breeding? (yes = 1, no = 0) | 0.79 | 0.41 | 0.00 | 1.00 |
The characteristics of production and operation | ||||
 Breeding years | 12.39 | 7.32 | 1.00 | 40.00 |
 Degree of specialization | 84.90 | 22.13 | 10.00 | 100.00 |
 Breeding scale | 990.34 | 2437.69 | 3.00 | 30,000.00 |
 Number of farmers | 2.07 | 1.12 | 1.00 | 9.00 |
 Production organization form (cooperation farms = 1, others = 0) | 0.79 | 0.41 | 0.00 | 1.00 |
Production mode (compared with piglet breeding) | ||||
 Self-rearing (yes = 1, no = 0) | 0.69 | 0.46 | 0.00 | 1.00 |
 Fattening of commercial pigs (yes = 1, no = 0) | 0.26 | 0.44 | 0.00 | 1.00 |
 Whether ASF has occurred (yes = 1, no = 0) | 0.37 | 0.48 | 0.00 | 1.00 |
 Cognition on the ASF (very small = 1, relatively small = 2, average = 3, relatively large = 4, very large = 5) | 4.45 | 0.92 | 1.00 | 5.00 |