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Table 4 Pearson’s correlation coefficients between tibia strength, BMD, medullary area and serum biochemical indices at week 42

From: Vitamin K alleviates bone calcium loss caused by Salmonella Enteritidis through carboxylation of osteocalcin

Week 42 Tibia strength BMDa Medullary area Serum Cab CTc PTHd cOCe ucOCf cOC/(cOC + ucOC)
Tibia strength 1.00         
BMDa −0.43 1.00        
medullary area 0.11 −0.52 1.00       
Serum Cab −0.63 0.39 −0.19 1.00      
CTc −0.72 0.66 −0.51 0.94 1.00     
PTHd −0.35 0.75 −0.58 0.82 0.89 1.00    
cOCe −0.40 0.55 −0.52 0.93 0.99* 0.94 1.00   
ucOCf −0.42 0.58 −0.38 0.93 0.93 0.96* 0.96* 1.00  
cOC/(cOC + ucOC) 0.38 −0.78 0.61 −0.82 − 0.90 −1.00* −0.95* − 0.96* 1.00
  1. aBMD Bone mineral density
  2. bSerum Ca Serum calcium
  3. cCT Calcitonin
  4. dPTH Parathyroid hormone
  5. ecOC Carboxylated osteocalcin
  6. fucOC Undercarboxylated osteocalcin
  7. *Correlation is significant at P < 0.05
  8. Note: The correlation is based on the 6 samples, n = 6/treatment, the tibia parameters were the average values of both sides