Table 3.

Univariate analysis (Mann-Whitney U test) of continuous variables in clinical parameters and general information between patients with KBD grades I and II.

Variables	Total	Grade I	Grade II	Z	P
		$\overline{X}+S$	$\overline{X}+S$
Age	57.0 ± 7.3	55.3 ± 9.2	58.0 ± 5.7	−2.120	0.034
BMI index	21.7 ± 2.6	21.7 ± 2.1	21.5 ± 2.8	−0.924	0.355
Metacarpal length	16.2 ± 1.2	16.7 ± 1.2	15.8 ± 1.1	−3.496	0.000
Metacarpal breadth	8.14 ± 0.5	8.01 ± 0.6	8.22 ± 0.5	−1.489	0.137