Child mortality, Skellefteå, Sweeden 1850--1900.

Children born in Skellefteå, Sweden, 1850-1884, are followed fifteen years or until death or out-migration.

data(child)

Format

A data frame with 26855 children born 1850-1884.

id: An identification number.
m.id: Mother's id.
sex: Sex.
socBranch: Working branch of family (father).
birthdate: Birthdate.
enter: Start age of follow-up, always zero.
exit: Age of departure, either by death or emigration.
event: Type of departure, death = 1, right censoring = 0.
illeg: Born out of marriage ("illegitimate")?
m.age: Mother's age.

Details

The Skellefteå region is a large region in the northern part of Sweden.

Source

Data originate from the Centre for Demographic and Ageing Research, Umeå University, Umeå, Sweden, https://www.umu.se/en/centre-for-demographic-and-ageing-research/.

Examples

fit <- coxreg(Surv(enter, exit, event) ~ sex + socBranch, data = child, coxph = TRUE)
summary(fit)
#> Covariate             Mean       Coef     Rel.Risk   S.E.    LR p
#> sex                                                          0.002 
#>             male      0.510     0         1 (reference)
#>           female      0.490    -0.084     0.920     0.027
#> socBranch                                                    0.000 
#>         official      0.021     0         1 (reference)
#>          farming      0.710    -0.007     0.993     0.092
#>         business      0.011     0.335     1.398     0.141
#>           worker      0.258     0.110     1.116     0.094
#> 
#> Events                    5616 
#> Total time at risk        325030 
#> Max. log. likelihood      -56499 
#> LR test statistic         32.27 
#> Degrees of freedom        4 
#> Overall p-value           1.68738e-06