Circumstance of endoscopic and laparoscopic treatments for gastric cancer in Japan: A review of epidemiological studies using a national administrative database

Table 1 Contents of data in the national administrative database[22]

Hospital information

Location of hospital

Number of beds

Patient background information

Age

Sex

Zip code

Diagnoses

Main diagnoses (coded with International Classification of Diseases and Injuries 10th Revision

(ICD-10th) code)

Main diagnoses (coded with the ICD-10th codes)

Complications after admission (coded with the ICD-10th codes)

Procedures for patients

Surgery, anesthesia and other procedures (coded with the Japanese original codes)

Drugs and devices (coded with the Japanese original codes)

Dates of each procedure

Dates of use for each drug and device

Admission and discharge data

Urgent or elective admission

Ambulance service use

Dates of admission and discharge; length of stay

Discharge status (discharge to home, rehabilitation hospital or other facility, or death)

Claim data

Total charge

Itemized charges for hospitalization, medication, examination, surgery and others

Other clinical data

Height/body weight

Smoking index

Pregnancy

Japan Coma Scale at admission

TNM classification of malignant tumors

Activity of Daily Living scale

Modified Rankin scale

Hugh-Jones classification of respiratory status

New York Heart Association classification of heart failure symptoms

Canadian Cardiovascular Society classification of angina pectoris

Killip classification of acute myocardial infarction

Severity classification of community-acquired pneumonia

Child-Pugh classification of liver cirrhosis

Severity classification of acute pancreatitis

Burn index

Global Assessment of Functioning scale