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| Variable classification | Variable | Variable measurement | Mean | Standard deviation |
|
| First-stage dependent variable | Farmers’ WTP for 60% of total cost product | Willing to buy = 1; unwilling to buy = 0 | 0.82 | 0.38 |
| Farmers’ WTP for total cost product | 0.76 | 0.43 |
| Farmers’ WTP for the output product | 0.71 | 0.45 |
|
| Second-stage dependent variable | Farmers’ WTP level for 60% of total cost product | The log value of the premium payment level covering 60% of the total cost | 2.25 | 0.42 |
| Farmers’ WTP level for total cost product | The log value of the premium payment level covering the total cost | 2.48 | 0.49 |
| Farmers’ WTP level for the output product | The log value of the premium payment level covering the output value | 2.59 | 0.51 |
|
| Individual characteristics | Education level (edu) | Elementary school and below = 1; junior high school = 2; high school or technical secondary school = 3; junior college and above = 4 | 1.74 | 0.75 |
| Age (age) | Statistics based on the actual age of the interviewed farmers | 47.21 | 9.69 |
| Farming experience (year) | Statistics based on the actual agricultural production time of the interviewed farmers: <20 = 1; 20∼30 = 2; 30∼40 = 3; >40 = 4 | 2.34 | 0.95 |
| Risk aversion degree (risk) | The quantity of property insurance and life insurance other than nonfinancial subsidy insurance | 0.38 | 0.59 |
|
| Production and operation status | Net household income (inc) | According to the actual consumption expenditure of rural households in 2016 and statistical indicators (ten thousand yuan): <1.16 = 1; 1.16–2.16 = 2; 2.16∼3.16 = 3; 3.16∼4.16 = 4; >4.16 = 5 | 2.79 | 1.19 |
| Production specialization (spe) | The proportion of corn planting income in total household income in 2016: <25% = 1; 25%∼50% = 2; 50%∼75% = 3; 75%∼100% = 4 | 2.91 | 1.13 |
| Planting area (land) | The actual corn planting area in 2016 taking the logarithmic value | 3.91 | 0.80 |
| Agricultural insurance payment in the previous year (claim) | Actual payment amount in 2015 (yuan/hm2) | 2.49 | 3.58 |
| The largest disaster loss in history (deg) | The degree of damage caused by the largest disaster in the past five years (division from 1 to 10) | 3.67 | 2.28 |
|
| Risk aversion measures | Diversified planting levels (div) | The number of crops being greater than 2, it is = 1; otherwise, it is = 0 | 0.52 | 0.5 |
| Loans from banks and credit unions (loan) | Actual loan amount in 2016 (ten thousand yuan) | 2.03 | 3.91 |
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