Hypocalcemia was associated with increased perioperative blood loss and blood transfusion in elderly patients with hip fracture: a retrospective study

Table 1 Demographic characteristics of the patients

Characteristics	Normocalcemia (n = 406)	Hypocalcemia (n = 276)	P value
Age (years)	76.77 ± 8.45	77.93 ± 9.42	0.093
Sex (male/female)	139/267	104/172	0.357
Height (cm)	158.42 ± 6.14	159.25 ± 6.92	0.101
Weight (kg)	55.07 ± 9.20	56.14 ± 9.97	0.147
BMI (kg/m²)	21.95 ± 3.11	22.08 ± 3.26	0.621
Surgical side (left/right)	244/162	152/124	0.192

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