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. 2019 Mar 6;23:103780. doi: 10.1016/j.dib.2019.103780

Table 3.

Criteria for the extraction of claims from the original database.

Purpose Criteria for extraction (Claims that fulfilled all criteria were extracted)
Dataset A
Data for extracting cases
  • 1.

    Claims for both inpatient and outpatient services, submitted by clinics or hospitals located in Kanto area (Tokyo and the six surrounding prefectures)

  • 2.

    Claims that included the treatment procedure codes listed in Table 2A

  • 3.

    Claims that included one of the ICD-10 codes listed in Table 2B as a principal or secondary diagnosis but not as a suspected diagnosis

  • 4.

    Claims covering April 1, 2013 to March 31, 2016

Dataset B
Data for refining the date of the first visit to health care providers
  • 1.

    Claims submitted by clinics or hospitals located in Kanto area (Tokyo and the six surrounding prefectures)

  • 2.

    Claims that included one of the ICD-10 codes listed in Table 2B as a principal or secondary diagnosis but not as a suspected diagnosis

  • 3.

    Claims that were not included in Dataset A

  • 4.

    Claims covering April 1, 2013 to March 31, 2016

ICD-10 = International Classification of Diseases, Tenth Edition.