Data on pregnancies in subfertile women
Table of Contents
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Description
The data come from a study of conception in subfertile women, described in Luthra et al. (1982). Bland & Altman (1998) used it to explain the Kaplan-Meier method.
Variables
| Variable | Explanation (Unit) |
|---|---|
| time | time in months (menstrual cycles) since laparoscopy |
| status | pregnancy (1) or no pregnancy by the end of the follow-up (0) |
Data download
| Format | Download |
|---|---|
| text (csv) | subfertile.csv |
| rda (for R) | subfertile.rda |
Load data into R
load(url("http://paulblanche.com/files/subfertile.rda")) head(subfertile)
References
Bland, J. M., & Altman, D. G. (1998). Survival probabilities (the Kaplan-Meier method). Bmj, 317(7172), 1572-1580.
Luthra, P., Bland, J. M., & Stanton, S. L. (1982). Incidence of pregnancy after laparoscopy and hydrotubation. British Medical Journal (Clinical research ed.), 284(6321), 1013.