Table 4.

Variable selection in the probit and hazard models

	Cohabiting at childbirth (probit model)	Separation (hazard model)
Educational level	X	X
Religious affiliation	X	X
Living together with both parents until age 18a	X	X
Period of family formation	X	X
Employment status 9 months prior to 1st childbirthb	X
Sex of first child		X
Health status of first child		X
Season of birth of child		X
Number of siblings	X
Birth cohorts	X	X
Age at first childbirth (years)	X	X
Union duration (years)	X	X
Partnership order	X	X
Employment statusb		X
Age of first child (baseline)		X
Further biological children		X

Sources pairfam/DemoDiff (2008–2011), own estimates. Weighted by sample design weight (including corrections for birth cohort and place of residence)

^aEvaluated in wave 2 (pairfam/DemoDiff)

^bEvaluated in wave 3 (Pairfam), wave 2 (DemoDiff)