对比注册表变量与db2set . out备份文件中的内容，在必要时进行重新应用。

Compare, and if necessary re-apply, the registry variables with those in the db2set.out backup file.

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包括癌症这样的许多健康问题都被记录在册，因此研究人员就简单地把注册表上的居民分为电话用户和非电话用户并且将这两组进行了对比。

Many health outcomes, including cancer, are recorded in the registry, so the researchers simply broke the population into phone subscribers and non-subscribers and compared the two groups.

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