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Table 1 Comparison of continuous variables of patients between two groups (the Mann–Whitney U test)

From: Association between bone turnover markers, BMD and height loss of cemented vertebrae after percutaneous vertebroplasty in patients with osteoporotic vertebral compression fractures

Clinical parameters Mean rank Median IQR Z score P value
The volume of bone cement injected
Recompression group 45.55 5.5 4.5–6.0 − 0.381 0.703
Non-recompression group 47.76 5.25 5.0–6.0   
BMD
Recompression group 23.11 − 2.8 − 3.1 to − 2.25 − 6.189 < 0.001*
Non-recompression group 59.53 − 1.1 − 2.1 to − 0.3   
Serum calcium
Recompression group 43.08 2.22 2.2–2.3 − 1.070 0.285
Non-recompression group 49.06 2.2 2.1–2.3   
Serum phosphorus
Recompression group 46.17 1.135 0.985–1.23 − 0.214 0.830
Non-recompression group 47.43 1.13 1.01–1.24   
ALP
Recompression group 41.23 75 61.5–96 − 1.492 0.136
Non-recompression group 50.02 85 69–102   
β-CTX
Recompression group 51.75 613.1 476–782.6 − 1.229 0.219
Non-recompression group 44.51 516.4 391–721.4   
OC
Recompression group 48.91 15.25 9.9–21.3 − 0.493 0.622
Non-recompression group 46 13.4 9.7–18.2   
P1NP
Recompression group 41.78 43.45 28.5–57.3 − 1.351 0.177
Non-recompression group 49.74 51.6 36.6–67.4   
PTH
Recompression group 35.59 38.1 26.7–50.3 − 2.952 0.003*
Non-recompression group 52.98 48.9 38.3–61.6   
25-OH-D3
Recompression group 38.3 13.3 10.45–18.5 − 2.252 0.024*
Non-recompression group 51.57 18.2 12.3–22.9   
  1. * and bold indicate statistically significant findings