Correlation and multivariate regression analyses
Correlation analyses are shown in Table 3. A negative correlation between femoral neck BMD and age (r : −0.21, p<0.001) was observed. Femoral neck BMD levels were positively correlated with BMI (r:0.29, p<0.001) and lumbar BMD (r: 0.54, p<0.001) (Table 3). Lumbar BMD was positively correlated with BMI (r:0.34, p<0.001) and the duration of CRF (r:0.22, p<0.001).
In multiple regression analyses, femoral neck BMD was associated with age and BMI (R2: 35.4%, p<0.001), lumbar BMD was associated with BMI (R2: 18.6%, p=0.040). None of the variables (gender, duration of CRF, time from renal transplantation, PTH, creatinine, femoral neck BMD, lumbar BMD, lumbar Z score) were statistically associated with vertebral fractures in multiple regression analysis. However, those were associated with age, duration of hemodialysis, BMI, femoral neck T score, femoral neck Z score (R2: 37.8%, p=0.027). None of the clinical and laboratory parameters were associated with PTH levels (R2: 12.5%, p=0.130).