GPT and arthritic joint disease: There was a significant difference in age, gender, race/ethnicity, family PIR, education level, marital status, smoker, drinker, osteoporosis, arthritis, SBP, DBP, BMI, waist circumference, Hb, FBG, fasting insulin, HbA1c, ALT, Scr, eGFR, HDL-C, TG, serum Ca, and serum phosphorus among the Q1, Q2, Q3, and Q4 groups.