R: A case-control study of endometrial cancer

bdendo {Epi} | R Documentation

## A case-control study of endometrial cancer

### Description

The `bdendo` data frame has 315 rows and 13 columns, `bdendo11` 126 rows. These data concern a study in which each case of endometrial cancer was matched with 4 controls. `bdendo11` is a 1:1 mathed subset of `bdendo`. Matching was by date of birth (within one year), marital status, and residence.

### Format

These data frames have the following columns:

`set`: | Case-control set: a numeric vector
`d`: | Case or control: a numeric vector (1=case, 0=control)
`gall`: | Gall bladder disease: a factor with levels `No` `Yes`.
`hyp`: | Hypertension: a factor with levels `No` `Yes`.
`ob`: | Obesity: a factor with levels `No` `Yes`.
`est`: | A factor with levels `No` `Yes`.
`dur`: | Duration of conjugated oestrogen therapy: a factor with levels `0`, `1`, `2`, `3`, `4`.
`non`: | Use of non oestrogen drugs: a factor with levels `No` `Yes`.
`duration`: | Months of oestrogen therapy: a numeric vector.
`age`: | A numeric vector.
`cest`: | Conjugated oestrogen dose: a factor with levels `0`, `1`, `2`, `3`.
`agegrp`: | A factor with levels `55-59` `60-64` `65-69` `70-74` `75-79` `80-84`
`age3`: | a factor with levels `<64` `65-74` `75+`

### Source

Breslow NE, and Day N, Statistical Methods in Cancer Research. Volume I: The Analysis of Case-Control Studies. IARC Scientific Publications, IARC:Lyon, 1980.

### Examples

    data(bdendo)
    str(bdendo)

[Package Epi version 2.47 Index]