Hip Osteonecrosis Is Associated with Increased Plasma IL-33 Level

Table 1

The demographics of patients with ONFH.

Demographic	Number/mean (SD)
Patients (M/F)	40
Male	31
Female	9
Mean age, year	49.2 (12.4)
Mean BMI, kg/m^2	24.2 (3.2)
Mean HHS, score	62.6 (14.6)
Mean length of disease history, month	38.9 (54.1)
Etiology
Idiopathic	11
Corticosteroids	14
Alcohol	15
ARCO stage
Stage II	4
Stage III	20
Stage IV	16
CJFH classification
L1	12
L2	18
L3	10