作为一种多发于中老年的疾病，男性发病率高于女性，比例为3：2。
As a disease whose prevalence is related with advancing age, it affects more men than women with a ratio of 3:2.
1型糖尿病发病率低的人所食用的牛奶含酪蛋白（是A2形式的β酪蛋白，而含A1和B变种形式的β酪蛋白比例要低得多）。
The cow-milk found in populations with a low incidence of type 1 diabetes has a much lower fraction of A1 and B betacaseins (instead they have the A2 variant).
20世纪70年代以来儿童肥胖症的发病率增加，而且在同一时期，生活在郊区的儿童比例也增加了。
Obesity rates among children have been increasing since the 1970's and, during that same time period, the proportion of children living in suburbs has increased.
在青春期后，女性的发病率变成18%，而男性的比例只有6%或7%。
After puberty, the prevalence becomes 18% for women and 6% or 7% for men.
方法分析252例CSC患者的视力、初诊年龄、双眼发病率、男女发病比例及眼底荧光素血管造影特点。
Methods The visual acuity, age of onset, bilateral incidence, gender ratio and fundus fluorescence angiography were analyzed in 252 patients with CSC.
这项调查同时发现，40%的企业家有可能是诵读困难患者，这一比例是英国大众发病率的4倍。
The survey also found evidence that 40 percent nike jordan shoesof entrepreneurs are likely to be dyslexic, four times the national average.
由于肿瘤发病率和在居民死亡原因中所占比例越来越高，肿瘤防治一直是各国卫生领域内的重点课题之一。
Considering the increasing prevalence of tumors and their percentage among population death causes, tumor prevention and treatment is always one of the key medical research subjects in all countries.
骨巨细胞瘤占我国骨肿瘤发病率的10%—15%，高于欧美国家5%—8%的比例。
The incidence of GCT of bone is about 10-15% in China, high than 5 -8% in western countries.
根据上周圣安东尼奥乳腺癌研讨会的报告，2003年美国乳腺癌的发病率明显下降，下降比例达7%。
According to a presentation at the San Antonio breast cancer Symposium last week, there was apparently a 7% drop in the incidence of breast cancer in the u.
广州地区偏头痛发病率和患病率明显低于国内六大城市以及国外资料。女性患者为男性的三倍，此一比例高于国外报导。
The statistical incidence and prevalence ratios in Guangzhou area are remarkably lower than those in foreign countries as well as in six large cities of China.
结果非透析CRF患者的心血管并发症的总发病率为41.51%，其中慢性肾小球肾炎CRF、高血压肾病CRF、糖尿病肾病CRF并发心血管疾病的比例分别为26.62%、6.92%和5.45%；
Results The total incidence was 41.51% in non-dialysis CRF patients, 26.62%, 6.92% and 5.45% in glomerulonephritis CRF, hypertensive CRF and diabetic CRF respectively;
作者说，历史上，哮喘的发病率一直都维持在较高的比例，虽然在上世纪90年代中期增长较慢。
Asthma prevalence remains at historically high levels even though increases in prevalence slowed in the mid-1990s, the authors report.
作者说，历史上，哮喘的发病率一直都维持在较高的比例，虽然在上世纪90年代中期增长较慢。
Asthma prevalence remains at historically high levels even though increases in prevalence slowed in the mid-1990s, the authors report.
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