Serum nicotinamide phosphoribosyltransferase as a novel biomarker for non-traumatic osteonecrosis of the femoral head

Table 1 Demographic data for NONFH patients and healthy controls

	NONFH patients (n = 113)	Healthy controls (n = 81)	P value
Gender (male/female)	86/27	59/22	0.606
Age (year)	51.67 ± 12.55	51.16 ± 10.70	0.764
BMI (kg/m²)	24.39 ± 2.73	24.76 ± 3.36	0.431
VAS	3.99 ± 1.98
HHS	60.92 ± 19.50
ARCO stage (I/II/III/IV)	4/36/36/37
Etiology (steroid/alcohol/idiopathic)	40/22/51
Side (unilateral/bilateral)	44/59

ISSN: 1749-799X