Table 5.
Outcome and treatment effect results of IPWRA models for adoption of bulk tank milk testing and not pooling colostrum
| Test bulk tank milk | Not pooling colostrum | |||
|---|---|---|---|---|
| Outcome (GM/cow) model | Outcome (GM/cow) model | |||
| Nonadopters | Adopters | Nonadopters | Adopters | |
| Herd size | –0.76(0.89) | 1.10***(0.32) | 1.54***(0.56) | 1.91***(0.67) |
| DSR | 78.49(102.76) | 45.03(39.99) | 56.36(51.76) | 53.61(45.74) |
| Specialization (base: Low) | ||||
| Medium | –86.17(101.03) | 46.29(41.78) | 99.59(69.01) | 77.42(57.47) |
| High | –15.34(79.78) | 41.41(47.61) | 11.55 (50.82) | 1.77(62.05) |
| Feed use | 6.29(8.14) | 31.05***(11.12) | 22.43*(11.93) | 16.96(11.68) |
| SCC | –1.62***(0.47) | –1.31***(0.27) | –0.51(0.38) | –1.42***(0.36) |
| Region (base: Northwest) | ||||
| East midlands | 37.65(122.17) | 111.72(72.66) | 181.09**(91.39) | –13.81(94.31) |
| South | 9.03(105.62) | 113.00**(58.56) | 170.84***(64.28) | –4.37(66.74) |
| Treatment modela | Treatment modela | |||
| Herd size | 0.02***(0.00) | –0.01***(0.00) | ||
| DSR | -–0.21 (0.31) | –0.15(0.30) | ||
| Feed use | 0.01(0.06) | –0.04(0.06) | ||
| SCC | 0.004*(0.00) | –0.001(0.002) | ||
| Debt to asset ratio | 0.01(0.02) | 0.02(0.02) | ||
| Specialization (base: Low) | ||||
| Medium | 0.11(0.37) | –0.24(0.34) | ||
| High | –0.01(0.36) | –0.14(0.33) | ||
| Age | 0.03*(0.02) | –0.05***(0.01) | ||
| Household | –0.14(0.10) | –0.05(0.10) | ||
| Region (base: Northwest) | ||||
| East midlands | 1.68***(0.61) | 0.57(0.51) | ||
| South | 1.52***(0.44) | 0.63(0.41) | ||
| Observations | 260 | 254 | ||
Notes: Estimates based on a doubly robust treatment effect using IPWRA estimator.
Robust standard error in parenthesis; Significance level: *** P < 0.01, ** P < 0.05, * P < 0.10.
Base category is model 1 (nonadopters).