求翻译：回归分析以含零值情况Y(编码0为不含，1为含)作为因变量，污秽等级和特征参数T1~T13作为需筛选的全部14个自变量，其中污秽等级做哑变量变换，选入分类协变量。是什么意思？

Regression analysis with the zero value of y (Code 0 without, 1 inclusive) as a result of variable pollution class and characteristic parameters of t1 ~ t13 as the required screening of all 14 independent variables, including pollution class to do the dummy variable transformation, the election into

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Regression analysis of the situation to those containing the value zero y (code 0 is not included, 1 inclusive) as a dependent variable, pollution classes and characteristic parameters of T1~T13 as a filter of all 14 variables, where pollution classes do dumb variable transformations, elected to the

The regression analysis take contains zero value situation Y (to code 0 as not to contain, 1 for contains) takes the dependent variable, the contamination rank and the characteristic parameter T1~T13 achievement must screen the complete 14 independent variables, in which contamination rank makes the