Methods The basic line investigation materials of chronic diseases and vital statistic materials were conventionally analyzed. Moreover, the death materials of chronic diseases were analyzed by PYLL and DALY analysis.

• 方法 对昆山市 1999年慢性病基线调查资料与生命统计资料进行常规统计分析 ,对慢性病死亡情况进行PYLL及DALY分析。