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Table 5 Pearson’s correlation coefficients between tibia strength, BMD, medullary area and serum biochemical indices at week 44

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

Week 44 Tibia strength BMDa Medullary area Serum Cab CTc PTHd cOCe ucOCf cOC/(cOC + ucOC)
Tibia strength 1.00*         
BMDa 0.95* 1.00        
medullary area −0.98 − 0.95 1.00       
Serum Cab −0.04 0.13 0.17 1.00      
CTc −0.43 −0.23 0.53 0.91 1.00     
PTHd −0.06 −0.31 0.18 −0.03 −0.15 1.00    
cOCe 0.29 0.50 −0.42 −0.10 − 0.06 −0.97* 1.00   
ucOCf −0.53 −0.73 0.61 −0.11 − 0.01 0.87 − 0.94 1.00  
cOC/(cOC + ucOC) 0.45 0.67 −0.54 0.11 0.05 −0.91 0.96* −1.00* 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 6 samples, n = 6 per treatment, the tibia parameters were the average values of both sides