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Table 2 Parameter selection of lasso regression and model evaluation for different parameters

From: A prediction model using machine-learning algorithm for assessing intrathecal hyperbaric bupivacaine dose during cesarean section

λ Value Selected physical variable Weight for variable Equation Intercept MSE R2
0.055 Abdominal girth -0.017599 0.5922 0.0087 0.8070
Vertebral column length 0.055117
0.038 Height 0.000141 0.5071 0.0086 0.8108
Abdominal girth − 0.018174
Vertebral column length 0.057225
0.031 Height 0.000286 0.4516 0.0085 0.81199
Weight −0.000171
Abdominal girth −0.018232
Vertebral column length 0.058107
0.020 Height 0.000618 0.3687 0.00844 0.81325
Weight −0.000600
Fundal height −0.001253
Abdominal girth −0.017910
Vertebral column length 0.059371
  1. MSE Mean-square error, R2 Coefficient of determination