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Table 1 Demographic and clinical characteristics at baseline

From: Extracorporeal shock wave therapy for bone marrow edema syndrome in patients with osteonecrosis of the femoral head: a retrospective cohort study

Variable ESWT group
Age, years 48.6 ± 11.2 (range, 25–73)
Male/female, n 24/43
ARCO stage, n
 I 10
 II 33
 III 24
Etiology, n
 Hormonal agent 25
 Alcohol 11
 Trauma 23
 Idiopathic 8
Duration of follow-up, months 3
  1. ESWT extracorporeal shockwave therapy, ARCO Association Research Circulation Osseous