2000年在某镇新诊断200例高血压病人．该镇年初人口数为9500人，年末人口数为10500人，在年初该镇有 800名高血压患者，在这一年中有40人死于高血压，2000年该镇高血压
A．年初患病率是800÷(95000- 800)
B．期间患病率是(200+800)÷10000
C．发病率是200÷10000
D．病死率是40÷10000
E．死亡率是40÷(200+800)
参考答案：B
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