Serum phosphorus was negatively correlated with serum calcium (r =-0.208; p=0.006), but was positively correlated with serum PTH (r=0.442; p<0.001).
Canxi tương quan nghịch với phospho (r = -0,208; p = 0,006). Phospho tương quan thuận với PTH (r = 0,442; p < 0,001).