To ensure accurate reporting of content, accurate, reliable and the comparability between data, report to the statistical data of the necessary screening, grouping, and macro and micro data.
为保证报告内容的翔实、准确、可靠及数据之间的可比性，报告对统计数据进行了必要的筛选、分组，并将宏观、微观数据紧密结合。
Methods Sampling interview, grouping comparison and multi factors statistical analysis are adopted.
方法抽样调查，分组对比，多因素统计分析。
Methods Sampling interview, grouping comparison and multi factors statistical analysis are adopted.
方法抽样调查，分组对比，多因素统计分析。
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