研究中也考虑进了包括依地区水平分类的收入、教育、职业的户口普查资料。

Also taken into account in the study were Census data on income, education, and occupation grouped at the neighborhood level.

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户口普查资料显示在2005年30 - 34岁的女性有32%的未婚，超过15年前未婚率的两倍。

Census data show that 32 percent of women between 30 and 34 were unwed in 2005, more than twice the number from 15 years earlier.

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