PTH and Stroke: History of stroke was associated with higher levels of serum PTH (Pearson correlation coefficient r = 0.155, P = 0.010), vitamin B12 (r = 0.139, P = 0.027), urinary bone resorption marker DPD/Cr (r = 0.183, P = 0.004), and lower BSI (r = −0.170, P = 0.009).