Journal of Orthopaedic Surgery and Research

Table 1 Characteristics of the osteoarthritis and control study population

From: FTO variant is not associated with osteoarthritis in the Chinese Han population: replication study for a genome-wide association study identified risk loci

Characteristic	Cases	Controls
Sample size	890	844
Males (%)	226 (25.28)	681 (80.69)
BMI (mean ± SD)	25.76 ± 3.69	24.91 ± 3.04*
Underweight (%)	8 (0.89)	12 (1.42)
Normal weight (%)	400 (44.94)	422 (50)
Overweight (%)	376 (42.24)	368 (43.60)
Obese (%)	106 (11.91)	42 (4.98)
Age (mean ± SD)	62.51 ± 11.43	54.07 ± 11.60*

BMI body mass index (kg/m²), OA osteoarthritis, K–L score Kellgren/Lawrence score
underweight, BMI < 18.5; normal, 18.5 ≤ BMI < 25; overweight, 25 ≤ BMI < 30; obese, BMI ≥ 30
*P < 0.001 for Mann-Whitney test as applicable between cases/controls

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ISSN: 1749-799X

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