发病率

The incidence of acute severe altitude sickness increases with the higher elevation.

急性重型高原病的发病率随着海拔的升高而增高。

POF occurs in 1-3% of general women and 10-20% in secondary amenorrhea women.

其发病率为1-3％，占继发性闭经的10-20％。

The research showed that the degree of oligomenorrhoea was more serious in the patients who had a family history and the rate of amenorrhoea was high (18.9%).

将有PCOS家族史的男性早秃视为PCOS在男性家庭成员中的遗传表型，得出先证者的一级和二级亲属的发病率分别为12.5％、9.8％，计算遗传度分别为37.3％和31.8％。

The ametropia incidence rate in Lanzhou area is similar to that in other domestic areas. It is necessary to take certain interventions to protect the visual power of high middle school students.

兰州市中学生屈光不正发病率与国内其它地区类似，采取一定的干预措施保护中学生的视力是有必要的。

Results 1 147 infective diseases were collected and analyzed; according to the list, the incidence and component of malaria were 20.20% and 72.45%; there were fastigiums in March, August; many TB and Amoebiasis were diagnosed collectively in short time, that is, May, September and February, March, April, and May respectively.

结果 在24个月的维和行动期间，共发生感染性疾病14类1 147例；疟疾的发病率和构成比最高，为20.20％和72.45％，是医疗与防疫工作的重点；3、8月各有1个明显病例诊出高峰；传染性结膜炎在个别分队发生流行，肺结核、阿米巴痢疾在各分队轮换后集中在某个分队诊出；肺结核集中出现在5、9月，阿米巴痢疾集中出现在2、3、4、5月。

The rate of anencephaly is now less than 1 in 10,000 live births in some places.

目前在一些地方新生无脑儿发病率低于

The incidence of anencephaly, one form of neural tube defect, has been reported to occur as frequently as 1 to 5 in 1000 live births in the past.

作为神经管缺陷的一种类型，无脑儿的发病率过去被报道为1～5/1000。

AIM:To determine the efficiency of surgical o perating microscopein locating the se- cond mesiobuccal canal of perm anent upper first molar.

上颌第一恒磨牙在口腔内萌出较早，其龋病和尖周病的发病率较高，然而有资料统计其根管治疗的成功率较低。

According to statistics: amblyopia in the incidence rate of 2%~4%, about 40%~60% of children strabismus, anisometropia not timely treatment cause amblyopia.

据统计：弱视在人群中的发病率为2%~4%，大约40%~60%的儿童斜视、屈光参差因治疗不及时发展成弱视。

According to the malaria statistics in 1989,the number of malaria cases,malaria incidence and positive parasite rate in native resident fever cases,and the number of malaria loci decreased by 20%,21.79%,35.85% and 31.06% respectively in comparison With that in 1988·In addition,the malaria transmission peak dropped down·All these achievements are due to strengthened antimalaria measures,especially in the areas where malaria incidence was higher.

1989年全省疟疾发病人数，发病率，当地发热病人血检疟原虫阳性率和疟疾病灶点数分别比1988年下降20.4%、21.79%、35.85%和31.06%，压低了9月份的发病高峰。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。