Performance evaluation of case definitions of type 1 diabetes for health insurance claims data in Japan

Table 3 Variable importance of gradient boosting decision trees (top 10 variables)

Items	Codes^a	Importance
Insulin needles for type 1 diabetes patients	114010970	0.324
Age		0.139
Test for HbA1c	160010010	0.05
Glucometers for type 1 diabetes or child glycemia patients (more than 120 times)	160151050	0.029
Urinalysis for quantitative measurement of Albumin	160004810	0.029
Test for Glycoalbumin	114015610	0.025
Standard psychoanalytic treatment	160000310	0.019
Urinalysis	180006810	0.016
Syringe pump for intermittent infusion	114022010	0.016
Confirmed diagnosis of eating disorder	F50	0.013

ISSN: 1472-6947