The researchers then used a complex statistical procedure called "factor analysis" to analyze subjects' dietary habits.
随后，研究人员利用一种叫做“因素分析”的复杂统计程序分析受试的饮食习惯。
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Objective The aim of this study is to analyze relevant factor to patients' condition in obstructive sleep apnea-hypopnea syndrome (OSAHS) merging chronic obstructive pulmonary disease (COPD).