既往的流行病学调查研究表明,教师等知识分子人群的MS患病率显著高于非知识分子人群[1]。近日由中国医师协会等40多家机构联合进行的《第二届中国城市健康状况大调查》结果也表明,在对北京、上海、广州等主要城市开展面向30余个行业、历时4个月的问卷调查,并结合300 Previous epidemiological studies have shown that the prevalence of MS among teachers and other intellectuals is significantly higher than that of non-intellectuals [1]. Recently, more than 40 organizations such as the Chinese Medical Association jointly conducted the “Second Survey on the State of Urban Health in China” results also show that in Beijing, Shanghai, Guangzhou and other major cities for more than 30 industries, which lasted four months Questionnaire, combined with 300