CYP27A1 and diabetes mellitus: In the total population, compared with the T-score ≥ −1.0 group, age, duration of diabetes, SBP, OC, β-CTX and PINP levels of the T-score < −1.0 group were significantly higher (P < 0.05), while BMI, DBP, Cr, UA, 25(OH)D, femoral neck BMD, LH BMD and LS BMD were significantly lower (P < 0.05) (Table 1).