Table 1.

Clinical characteristics of the patients in each cohort

Characteristics	Total (n = 112)	Training cohort (n = 68)	Validation cohort (n = 22)	P value*	Test cohort (n = 22)	P value**
Age, years, mean ± SD	51.4 ± 9.3	49.5 ± 9.5	52.0 ± 9.6	0.273	52.6 ± 8.6	0.174
Gender, n (%)				0.792		0.630
Male	62 (55.4)	38 (55.9)	13 (59.1)		11 (50.0)
Female	50 (44.6)	30 (44.1)	9 (40.9)		11 (50.0)
Height (cm)	167.6 ± 8.9	166.0 ± 8.7	167.1 ± 9.6	0.633	166.2 ± 9.0	0.949
Weight (kg)	68.2 ± 13.2	66.2 ± 12.5	65.4 ± 12.4	0.793	64.7 ± 11.7	0.613

Categorical data are shown as numbers (%), and continuous data are shown as means ± SDs

^*The P value is the test result obtained with respect to the training cohort and the validation cohort

^**The P value is the test result obtained with respect to the training cohort and the test cohort