Multivariate model of the annual incidence rate ratio (IRR) of moderate or severe COPD exacerbations, estimated by a random effects negative binomial model.

*IRR per 1 SD increase of marker value.
Multivariate model of the annual incidence rate ratio (IRR) of moderate or severe COPD exacerbations, estimated by a random effects negative binomial model.

标志物数值每升高1个标准差（SD, Standard Deviation）对应的发病率比（IRR, Incidence Rate Ratio）。
本多变量模型针对中重度慢性阻塞性肺疾病（COPD, Chronic Obstructive Pulmonary Disease）急性加重的年度发病率比构建，并通过随机效应负二项模型（random effects negative binomial model）完成估算。