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1986年5月至1987年1月选择南安水头镇24大队常住人口78159人作调查对象,该镇人口密集,经济文化和地理环境悬殊,其中沿海地段10大队41617人,山区地段14大队36542人。一、患病率:山区地段为3.45%较之沿海地段的2.21‰(x~2=10.71,P<0.01)为高。7～14岁组患病数最高,35岁比例低且多属轻症。男性患病率3.21‰、女性2.37‰(x~2=5.04,P<0.05)。二、病因资料;以出生前因素占首位(包括明显遗传因素者96例、21三体者11
From May 1986 to January 1987, 78,159 residents of 24th Battalion of Shuitou Town in Nanan were selected as survey subjects. The population of this town is densely populated with huge economic, cultural and geographical differences. Among them, there are 41,617 people in the 10 brigades of the coastal area and 36542 people in the 14th brigade of the mountainous area. First, the prevalence rate: 3.45% in mountainous areas compared with 2.21 ‰ (x ~ 2 = 10.71, P <0.01) in coastal areas. 7 to 14-year-old group the highest number of ill, 35-year-old low and mostly mild. The prevalence of males was 3.21 ‰ and females was 2.37 ‰ (x ~ 2 = 5.04, P <0.05). Second, the cause of the information; to pre-natal factors in the first place (including obvious genetic factors in 96 cases, 21 trisomy 11