Fertility data

Fertility data analysed by Winkelmann(1995). The data comes from the second (1985) wave of German Socio-Economic Panel. The sample is formed by 1,243 women aged 44 or older in 1985. The response variable is the number of children per woman and explanatory variables are described in more details below.

fertility

Format

A data frame with 9 variables (5 factors, 4 integers) and 1243 observations:

children

integer; response variable: number of children per woman (integer).

german

factor; is the mother German? (yes or no).

years_school

integer; education measured as years of schooling.

voc_train

factor; vocational training ? (yes or no)

university

factor; university education ? (yes or no)

religion

factor; mother's religion: Catholic, Protestant, Muslim or Others (reference).

rural

factor; rural (yes or no ?)

year_birth

integer; year of birth (last 2 digits)

age_marriage

integer; age at marriage

For further details, see Winlemann(1995).

References

Winkelmann R (1995). “Duration dependence and dispersion in count-data models.” Journal of Business & Economic Statistics, 13(4), 467--474.