This is a matched case-control study dating from before the availability of conditional logistic regression.
1.
Education
0 = 0-5 years
1 = 6-11 years
2 = 12+ years
2.
age
age in years of case
3.
parity
count
4.
number of prior
0 = 0
induced abortions
1 = 1
2 = 2 or more
5.
case status
1 = case
0 = control
6.
spontaneous abortions
7.
matched set number
1-83
8.
stratum number
1-63
Note
One case with two prior spontaneous abortions and two prior induced abortions is omitted.
Source
Trichopoulos et al (1976) Br. J. of Obst. and Gynaec. 83, 645–650
Use the following R code to directly access this dataset in R.
