Nonlinear relationship between circulating homocysteine and parathyroid hormone among patients with osteoporotic fractures: A cross-sectional study based on a hospital cohort
Fig 2
Smoothed curve of the association between lnHcy and serum PTH.
Each short black tick on the x-axis represents one participant. The solid red line represents the fitted curve derived from a generalized additive model (GAM), and the blue shaded area indicates the 95% confidence interval. The model was adjusted for age, sex, BMI, hypertension, diabetes, albumin, creatinine, magnesium, smoking status, alcohol consumption, ASA classification, and admission season. Abbreviations: BMI, body mass index; ASA, American Society of Anesthesiologists.