. Author manuscript; available in PMC: 2023 Oct 18.

Published in final edited form as: J R Stat Soc Ser A Stat Soc. 2021 Jul 5;184(4):1390–1413. doi: 10.1111/rssa.12716

TABLE 2.

Summary statistics of categorical covariates in the Detroit Longitudinal Cohort

	N	%
Marital status
Biological mother’s
Married	19	8.2
Not married	213	91.8
Primary care giver’s at 7-year follow-up
Married	205	88.4
Not married	27	11.6
Parity
0	88	37.9
1	63	27.2
2	51	22.0
3	17	7.3
4	8	3.4
>=5	5	2.2
Gravidity
1	39	16.8
2	53	22.8
3	47	20.3
4	33	14.2
>=5	60	25.8