The Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2017 classification separates the spirometric 1-4 staging from the ABCD groups defined by symptoms and exacerbations. Little is known about how this new classification predicts mortality in patients with chronic obstructive pulmonary disease (COPD). We aimed to establish the predictive ability of the GOLD 2017 classification, compared with earlier classifications, for all-cause and respiratory mortality, both when using its main ABCD groups and when further subdividing according to spirometric 1-4 staging.

中文翻译：

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新的《 2017年慢性阻塞性肺疾病全球倡议》对慢性阻塞性肺疾病患者的死亡率进行了预测：一项队列研究。

2017年全球慢性阻塞性肺疾病倡议（GOLD）分类将肺量计1-4分期与由症状和病情加重定义的ABCD组区分开来。对于这种新的分类如何预测慢性阻塞性肺疾病（COPD）患者的死亡率知之甚少。我们的目的是在使用主要ABCD组以及根据肺量计1-4分期进一步细分时，与早期分类相比，确定GOLD 2017分类对全因和呼吸道疾病的预测能力。