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Table 3 Results of the robust Cobb-Douglas stochastic cost frontier estimation

From: Farm level allocative efficiency of rice production in Gulu and Amuru districts, Northern Uganda

Log cost of producing rice Coefficient (standard error)
Log rice output (kg) 0.291*** (0.048)
Log land rent per acre per year (UShs) 0.224 (0.137)
Log price planting material (UShs) 0.080 (0.090)
Log labour cost per hour (UShs) 0.503*** (0.064)
District (Gulu) − 0.111 (0.084)
Hired labour use dummy − 0.176** (0.080)
Constant 4.699*** (1.731)
N 200
Wald chi2(6) 148.020
Prop > chi2 0.000
Log likelihood − 170.099
  1. VIF test had mean VIF of 1.15. All the variables in this model had VIF values of less than 3, which is highly acceptable
  2. **5% level of significance
  3. ***1% level of significance