Predicting opioid dependence from electronic health records with machine learning

Table 2 Top 10 features by Gini importance

Lab Test/Vital Sign	Mean Gini	SD Gini	Case Mean	Control Mean	Case SD	Control SD
Red blood cell distribution width	0.026	0.001	14.620	14.1	1.687	1.592
Albumin testing g/dL	0.025	0.001	3.793	3.99	0.753	0.749
Total bilirubin mg/dL	0.025	0.002	0.191	0.19	0.115	0.111
Lymphocytes percentage	0.024	0.001	25.509	22.236	10.253	10.488
Total protein g/dL	0.024	0.001	7.181	7.078	0.855	0.832
Neutrophils percentage	0.022	0.001	63.032	67.512	12.542	12.707
Phosphorus mg/dL	0.019	0.001	3.608	3.482	0.729	0.742
Absolute neutrophil count	0.019	0.001	4.826	5.566	2.396	2.674
Hemoglobin g/dL	0.018	0	12.545	12.886	2.021	2.031
Hematocrit test	0.018	0	37.164	38.05	5.851	5.892

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