Incidence of Down's Syndrome in British Columbia
在不列颠哥伦比亚省的唐氏综合症的发病
译者：生物统计家园网 机器人LoveR
描述----------Description----------
The downs.bc data frame has 30 rows and 3 columns.
downs.bc数据框有30行，3列。
Down's syndrome is a genetic disorder caused by an extra chromosome 21 or a part of chromosome 21 being translocated to another chromosome. The incidence of Down's syndrome is highly dependent on the mother's age and rises sharply after age 30. In the 1960's a large scale study of the effect of maternal age on the incidence of Down's syndrome was conducted at the British Columbia Health Surveillance Registry. These are the data which was collected in that study.
唐氏综合征是一种遗传性疾病，造成额外的21号染色体被转运到另一个染色体21号染色体的一部分。唐氏综合症的发病率是高度依赖母亲的年龄，30岁后急剧上升。在1960年的大规模研究的产妇年龄是在不列颠哥伦比亚省卫生监督注册表进行唐氏综合症的发病率的影响。这些都是在这项研究中收集到的数据。
Mothers were classified by age. Most groups correspond to the age in years but the first group comprises all mothers with ages in the range 15-17 and the last is those with ages 46-49. No data for mothers over 50 or below 15 were collected.
母亲们按年龄划分。大多数群体对应岁，但第一组包括年龄范围在15-17和过去所有的母亲是那些年龄46-49。超过50或15岁以下的母亲没有收集数据。
用法----------Usage----------
downs.bc
格式----------Format----------
This data frame contains the following columns:
这个数据框包含下列资料：
The average age of all mothers in the age category.
所有的母亲在年龄组的平均年龄。
The total number of live births to mothers in the age category.
活产婴儿的母亲在年龄类别的总数。
The number of cases of Down's syndrome.
唐氏综合征的病例数。
源----------Source----------
The data were obtained from
数据取自
Geyer, C.J. (1991) Constrained maximum likelihood exemplified by isotonic convex logistic regression. Journal of the American Statistical Association, 86, 717–724.
赫耶尔，CJ（1991）限制最大体现等渗凸logistic回归的可能性。 [美国统计协会，86，717-724。
参考文献----------References----------
Bootstrap Methods and Their Application. Cambridge University Press.
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
发表于 2012-2-16 18:33:27
