方法：将大庆市红岗区、让胡路区两个社区3524名40岁以上居民为调查对象，其中男性1790人，女性1734人，详细填写调查问卷表。
Methods: Honggang District, Daqing City, two communities 3524 Ranghulu area residents over the age of 40 subjects, male 1790, female 1734 people, fill out a questionnaire form.
方法：将大庆市红岗区、让胡路区两个社区3524名40岁以上居民为调查对象，其中男性1790人，女性1734人，详细填写调查问卷表。
Methods: Honggang District, Daqing City, two communities 3524 Ranghulu area residents over the age of 40 subjects, male 1790, female 1734 people, fill out a questionnaire form.
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