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本文报道了1996～1998年某校新生1693人血清HBsAg检测结果。总阳性率为8．4％。阳性率进行分年比较无显著差异性。将城市新生和农村新生血清HBsAg检出阳性率进行比较，发现它们之间有非常显著差异性，农村新生血清HB－sAg阳性率高可能与农村生活和卫生条件以及卫生习惯较差有一定关系。将城市或农村新生血清HBsAg检出阳性率分年进行比较，发现前者各年间无显著差异性，而后者则每年递减有非常显著差异性，这可能与农村上述各条件得到了较大的改善有关。
This article reports the results of serum HBsAg in 1693 freshmen from 1996 to 1998. The total positive rate was 8.4%. There was no significant difference in the positive rates between years. The positive rates of HBsAg between urban freshmen and rural neonates were compared and found that there was a very significant difference between them. The positive rate of HBsAg in rural newborn serum may be related to poor living and hygiene conditions in rural areas and poor hygiene habits. Comparing the positive rates of HBsAg in urban or rural newborn sera for several years, we found no significant difference in the former between years, while the latter declines very significantly each year, which may be related to the above conditions in rural areas have been greatly improved .