问题描述：
英语翻译
The p values for the temporal trends of in-hospital outcomes and complications were obtained by modeling time as an ordinal independent variable using the logistic generalized estimating equations method with an exchangeable working correlation matrix to account for within-hospital clustering because patients at the same hospital are more likely to have similar responses relative to patients at other hospitals (i.e.,within-center correlation for responses)
The p values for the temporal trends of in-hospital outcomes and complications were obtained by modeling time as an ordinal independent variable using the logistic generalized estimating equations method with an exchangeable working correlation matrix to account for within-hospital clustering because patients at the same hospital are more likely to have similar responses relative to patients at other hospitals (i.e.,within-center correlation for responses)
问题解答：
我来补答展开全文阅读