Baseline characteristics of the patients included in the validation population.

a In the validation population, BNP was measured using the Advia Centaur BNP assay (Bayer Healthcare LLC, Tarrytown, NY, USA) in all patient.Baseline characteristics of the patients included in the validation population.

在验证队列中，所有患者的脑钠肽（BNP）均采用Advia Centaur BNP检测试剂盒（拜耳医疗保健有限责任公司，美国纽约州塔里敦市）完成测定。纳入该验证队列的患者基线特征如下。