Table A1.

The result of prediction outcome with decrease of sample size

Sample size	36	35	34	33	32	31	30	29	28	27	26	25	24	23
Train set, %	91.7	94.3	88.2	90.9	90.6	90.3	93.3	86.2	85.7	100	88.5	100	100	82.6
Test set, %	90	90	80	80	90	70	70	60	60	70	60	70	80	70
Cross‐validation, %	72.2	71.4	67.7	69.7	75	64.5	70	65.5	71.4	70.4	76.9	64	62.5	60.9

Sample size	22	21	20	19	18	17	16	15	14	13	12	11	10	…
Train set, %	86.4	85.7	80	79.0	88.9	100	93.8	100	92.9	92.3	91.7	90.9	100
Test set, %	80	70	70	70	60	70	70	60	70	60	60	60	50
Cross‐validation, %	68.2	61.9	65	73.7	72.2	76.5	62.5	62.5	57.1	69.2	66.7	63.6	60