Table 2.

Reclassification of machine models against the refitted China-PAR model^a

		XGBoost				NRI (95% CI)	IDI (95% CI)
		<2.5%	2.5–4.9%	≥5%	Total
	Refitted China-PAR
Non-case	<2.5%	14 142	270	74	14 486	0.0386	0.0174
	2.5–4.9%	2119	2506	323	4948	(0.0135, 0.0638)	(0.0135, 0.0212)
	≥5%	53	1183	3577	4813
	Total	16 314	3959	3974	24 247
Case	<2.5%	185	11	8	204
	2.5–4.9%	46	114	20	180
	≥5%	1	62	522	585
	Total	232	187	550	969

		LASSO
		<2.5%	2.5–4.9%	≥5%	Total
	Refitted China-PAR
Non-case	<2.5%	14 147	324	15	14 486	0.0278	0.0106
	2.5–4.9%	1057	3543	348	4948	(0.0066, 0.0489)	(0.0081, 0.0131)
	≥5%	3	826	3984	4813
	Total	15 207	4693	4347	24 247
Case	<2.5%	188	14	2	204
	2.5–4.9%	22	132	26	180
	≥5%	0	41	544	585
	Total	210	187	572	969

^aThe results are given based on the subjects who were not censored (25 216) from the validation set of 31 544.