Table 3.

Comparison of body mass index (BMI) and MRI findings among patient and control groups.

Variable	Patients, n = 48	Controls, n = 20	p
BMI, kg/cm², mean ± SD^†	34.24 ± 5.88	31.67 ± 6.34	0.11
Bone marrow edema, n (%)	20 (41.7)	2 (10)	0.011^*
Cartilaginous erosions, n (%)	42 (87.5)	5 (25)	< 0.001^**

↵† Independent sample t test for equality of means; other data analyzed by chi-square test.
↵* Significant (p < 0.05);
↵** highly significant (p < 0.001). MRI: magnetic resonance imaging.