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

Figure 3

Comprehensive and physical function-related variables according to Exerci_Freq in 50-year-old patients with OA. Among 15 variables, (a) SGOT_AST (U/L), (b) TOT_CHOLE (mg/dL), (c) ELD_LLFX_SEC (s), and (d) FALL were representatively selected, as these variables had definite and similar patterns in Exerci_Freq among the four exercise types (Mov20_Wek, frequency of 20 min intensive exercise per week; Exerci_Freq, frequency of moderate-intensity exercise per week; Move30_Freq, frequency of 30 min moderate-intensity exercise per week; Walk30_Wek, frequency of 30 min walking per week). (1) do not exercise at all; (2) exercise 1-2 times per week; (3) exercise 3-4 times per week; (4) exercise 5-6 times per week; (5) almost daily exercise.

(a)

(b)

(c)

(d)