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Table 1 Descriptive statistics for background characteristics of study participants

From: Proximal tibial trabecular bone mineral density is related to pain in patients with osteoarthritis

Characteristic Without outlier
Age (mean ± SD) 64.1 ± 10.2
Sex (male:female) 17:24
BMI (mean ± SD) 28.6 ± 3.7
Side (left:right) 17:24
OA severity (KL) (0/1/2/3/4) 0/0/2/21/18
WOMAC score 9.7 ± 2.8
Medial joint space narrowing (0/1/2/3) 0/6/9/24a
Lateral joint space narrowing (0/1/2/3) 30/5/0/4a
Non-weight-bearing alignment 27 varus, 6 neutral, 8 valgus
Total epiphyseal BMD, mg/cm3 K2HPO4 (mean ± SD) 106 ± 37
Lateral epiphyseal BMD, mg/cm3 K2HPO4 (mean ± SD) 106 ± 34
Medial epiphyseal BMD, mg/cm3 K2HPO4 (mean ± SD) 141 ± 68
Total metaphyseal BMD, mg/cm3 K2HPO4 (mean ± SD) 90 ± 36
  1. BMI body mass index, OA osteoarthritis, KL Kellgren-Lawrence grade, WOMAC Western Ontario and McMaster Universities Osteoarthritis Index, BMD bone mineral density
  2. aJoint space narrowing scores not available in 2 participants