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Table 2 Parameter estimates of stochastic production frontier and technical inefficiency models

From: A stochastic frontier analysis of technical efficiency of fish cage culture in Peninsular Malaysia

Variable Parameter Coefficients Standard error
Stochastic production frontier
 Constant β0 1.1236* 0.4424
 Ln seed (fish fry) β1 0.3984*** 0.1157
 Ln (Feed) β2 0.1897* 0.0761
 Ln (Labour) Β3 0.3239*** 0.1194
 Ln (Operational costs) β4 −0.0714 0.0736
 Ln (Energy) β5 0.0869 0.0799
 Ln (Other inputs) β6 −0.0435 0.1009
Technical inefficiency model
 Constant δ0 0.4535 0.1729
 Age (no. of years) of respondent δ1 −0.0029 0.0025
 Experience (no. of years) δ2 −0.0028 0.0042
 Cage area (m−2) δ3 −0.0177 0.0169
 Education (level) δ4 −0.0024 0.0074
 Production cycle (number) δ5 −0.1099** 0.0349
Variance parameter
 Sigma-square σ 2 s  = σ 2 u  + σ 2 v   1.9947** 0.0187
 Gamma γ = σ 2 u /σ 2   0.9774*** 3.0008
 Log likelihood   −118.86  
 Mean of exp (−Ui)   0.37  
  1. *** Estimates are significant at 1 %, ** significant at 5 %, * significant at 10 %