Table 3 Top nine most important features in the CaRT case definition
Feature | Code Description | Data type | Importance score |
|---|---|---|---|
One ATC code G03CA (or any sub-codes) | Natural and semisynthetic estrogens | Medication | 0.54534 |
Two ICD-9 codes 627 (or any sub-codes) in 24 months | Menopausal and postmenopausal disorders | Billing, encounter diagnosis or problem list | 0.23344 |
Two ATC codes G03 (or any sub-codes) | Sex hormones and modulators of the genital system | Medication | 0.07973 |
Two ATC codes G03CA (or any sub-codes) | Natural and semisynthetic estrogens | Medication | 0.04548 |
Two instances of “menopausal” in free text |  | Billing, encounter diagnosis or problem list | 0.03261 |
One code ATC code G03DA04 | Progesterone | Medication | 0.02862 |
Two ATC codes G03DA (or any sub-codes) | Pregnen (4) derivatives | Medication | 0.01343 |
One instance of “postmenopausal” in free text |  | Billing, encounter diagnosis or problem list | 0.01245 |
One ICD-9 code 627 (or any sub-codes) | Menopausal and postmenopausal disorders | Encounter diagnosis | 0.00890 |