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Table 3 Maximum likelihood estimates of stochastic frontier model

From: Impact of improved beehives technology adoption on honey production efficiency: empirical evidence from Southern Ethiopia

Input variables Coefficients Std. p value
Constant 0.674** 0.146 0.000
Number hive (ln) 0.145*** 0.028 0.000
Lab our use in (man-day) (ln) 0.042 0.057 0.468
Type of beehive used 0.488*** 0.071 0.000
Bee forage cultivation (ln) 0.077 0.048 0.106
Proximity to natural forest − 0.139** 0.037 0.000
Supplement used (ln) 0.004 0.025 0.880
Inefficiency variables
Constant − 1.049 1.329 0.809
Sex household head (Hh) 0.741 0.536 0.345
Household size 0.106 0.066 0.109
Beekeeping experience of Hh 0.153* 0.085 0.071
Education level of Hh − 0.081*** 0.025 0.002
Cooperative member − 2.856*** 0.470 0.000
Distance to market 1.305 0.585 0.126
Participations in demonstration − 1.684*** 0.496 0.001
Extension contact per year − 0.042** 0.019 0.034
Total income (ln) 0.236 0.441 0.592
Sigma square 0.153***   0.002
Gamma 0.435**   0.032
Log likelihood − 213.888   
  1. ***, ** and * denote significant at the 1, 5 and 10%, respectively