Table A1.

Appendix Descriptive Statistics for Background Characteristics in DNBC

Variable	Description	Mean	Std. Dev.	N
Maternal age	Maternal age in years	29.565	4.244	1930
Child: boy	0/1 indicator for a male birth	0.525	0.500	1937
Married/stable relationshipa	0/1 indicator for mother being married or a stable relationship	0.989	0.106	1839
Previous live births	Number of previous live births at time of 1st DNBC interview	0.727	0.833	1841
Previous miscarriages	Number of previous miscarriages at time of 1st DNBC interview	0.258	0.608	1839
Unplanned pregnancy	0/1 indicator for not planning the pregnancy	0.099	0.298	1842
Average healthb	0/1 indicator for mother reporting her health as “average”	0.429	0.495	1840
Not so good healthb	0/1 indicator for mother reporting her health as “not so good”	0.047	0.211	1840
Mental problems	0/1 indicator for any previous or current mental health problems	0.126	0.332	1840
Menarche	Mother’s age at menarche in years	13.330	1.421	1678
Employed	0/1 indicator for being employed at the time of the 1st DNBC interview	0.213	0.409	1842

^aNotes: reference category is single mothers

^breference category is good health