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Table 2 Estimation results

From: Determinants of efficiency in residential electricity demand: stochastic frontier analysis on Japan

  Model A Model B
  Coefficient Standard error Coefficient Standard error
Constant (α) − 0.269a (0.035) − 0.401a (0.037)
αP − 0.651a (0.017) − 0.618a (0.020)
αIC 0.397a (0.022) 0.365a (0.022)
αHS 0.135b (0.067) 0.150a (0.056)
αFA 0.328a (0.072) 0.303a (0.061)
αAG 0.171a (0.048) 0.132a (0.044)
αCDD 0.180a (0.016) 0.150a (0.015)
αHDD − 0.134a (0.019) − 0.139a (0.018)
Constant (β) − 0.976b (0.472) − 2.019 (1.534)
βHS − 1.034a (0.219) − 0.213b (0.097)
βFA 1.171a (0.230) 0.396a (0.101)
βAG − 0.022 (0.133) − 0.137 (0.084)
Time dummies No   Yes  
Sigma-squared 0.382a (0.065) 0.174a (0.015)
Gamma 0.770a (0.040) 0.602a (0.047)
Log likelihood − 417.382   − 344.568  
Mean efficiency 0.770   0.690  
  1. aSignificance at the 1% level
  2. bSignificance at the 5% level