Certainly, because of the small sampling of this research limited in three universities in Guangxi, the research results are still explorative but not qualified to be popularized.
They then assigned the men in the sample a socioeconomic status score between zero and 96, on a scale drawn up in 1950 (which was as close to 1910 as they could get).
3
该报告基于在全国范围内对12571名男性和女性开展的一项抽样调查。
The report was based on a nationally representative sample of 12, 571 men and women.