Econometric Parameter Estimates (Probit)
| All Data | Years 1998–2005 | Years 2000–2005 | Years 2002–2005 | |||||
|---|---|---|---|---|---|---|---|---|
| Constant | −0.32 | (0.50) | −0.25 | (0.48) | −0.75 | (0.47) | −1.26* | (0.50) |
| Soil quality | −0.04 | (0.12) | −0.07 | (0.12) | −0.01 | (0.12) | −0.14 | (0.14) |
| Distance to OV | −0.06* | (0.01) | −0.06* | (0.01) | −0.03* | (0.01) | −0.014* | (0.01) |
| Organic farms within 5 miles | 0.73* | (0.15) | 0.47* | (0.11) | 0.37* | (0.10) | 0.52* | (0.18) |
| Organic farms between 5 and 10 miles | 0.98* | (0.14) | 0.66* | (0.09) | 0.4* | (0.07) | 0.68* | (0.16) |
| Structure | −0.00012 | (0.0009) | −0.0002 | (0.0009) | −0.00078 | (0.0010) | −0.00118 | (0.0009) |
| 1996 | 0.4 | (0.47) | ||||||
| 1997 | 0.74 | (0.45) | ||||||
| 1998 | 0.29 | (0.45) | ||||||
| 1999 | 0.33 | (0.45) | 0.18 | (0.24) | ||||
| 2000 | 0.4 | (0.44) | 0.28 | (0.23) | ||||
| 2001 | 0.35 | (0.44) | 0.08 | (0.25) | −0.28 | (0.15) | ||
| 2002 | −0.15 | (0.59) | −0.38 | (0.27) | −0.62* | (0.17) | ||
| 2003 | 0.04 | (0.46) | −0.49 | (0.28) | −0.86* | (0.24) | −0.22 | (0.20) |
| 2004 | −0.84 | (0.50) | −1.21* | (0.36) | −1.33* | (0.33) | −0.9* | (0.39) |
| 2005 | −3.17* | (1.00) | −3.14* | (0.73) | −2.74* | (0.63) | −2.81* | (1.00) |
| Avg. Organic farms within 5 miles | −1.94* | (0.40) | −1.14* | (0.17) | −0.54* | (0.15) | −0.54* | (0.19) |
| Avg. Organic farms between 5 and 10 miles | −2.52* | (0.38) | −1.14* | (0.17) | −0.48* | (0.10) | −0.7* | (0.17) |
| Number of observations | 20,299 | 14,611 | 10,882 | 7,203 | ||||
Note: Standard errors (in parentheses) are bootstrapped with 500 replications and clustered by farm.
↵* Significantly different from zero (95% confidence level).