Evidence-Based Cutoff Threshold Values from Receiver Operating Characteristic Curve Analysis for Knee Osteoarthritis in the 50-Year-Old Korean Population: Analysis of Big Data from the National Health Insurance Sharing Service

Table 2

Characteristics of the NHISS DB-derived population with OA.

Parameters	Values
	Men	Women
Total patients with OA	723	1365
Average age (years)	54.51	54.73
BMI (kg/m^2)	24.42	25.50
Total cholesterol (mg/dL)	199.84	211.37
SGOT_AST (U/L)	31.06	25.81
SGPT_ALT (U/L)	29.97	23.83
Gamma_GTP (U/L)	63.85	23.21

Patients with KSCDCD-derived codes M17 and M17.1–M17.9 were extracted from the NHISS DB. NHISS DB, National Health Insurance Sharing Service database; KSCDCD, Korean Standard Classification of Disease and Causes of Death; OA, osteoarthritis; BMI, body mass index; SGOT_AST, serum glutamic oxaloacetic transaminase and aspartate aminotransferase; SGPT_ALT, serum glutamic pyruvic transaminase and alanine aminotransaminase; Gamma_GTP, gamma glutamyl transpeptidase.