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Table 1 Clinical characteristics of the patients with primary knee osteoarthritis patients

From: Estrogen receptor-α gene haplotype is associated with primary knee osteoarthritis in Korean population

Characteristic Findings
Age (years) 58.8 ± 9.6
Number women/men (n) 98/53
Age at onset age (years) 52.0 ± 9.5
Body mass index (kg/m2) 25.2 ± 2.9
Duration of osteoarthritis (years) 6.8 ± 5.9
Kellgren-Lawrence grade (n): 1/2/3/4 6/84/56/5
Lequesne's index 10.2 ± 2.5
  1. A total of 151 patients with primary knee osteoarthritis were included. Values are expressed as mean ± standard deviation or as numbers.