. Author manuscript; available in PMC: 2015 Sep 1.

Published in final edited form as: Behav Genet. 2014 Aug 13;44(5):456–467. doi: 10.1007/s10519-014-9668-4

Table 1.

Number of individuals for each outcome analyzed

	Sub-cohort				Families
	From registers	Birth years cohort^a	Available	After elimination^b (% of available)	Total^c (% of available)
Birth weight, Preterm birth, and Born small for gestational age	Medical Birth Register	1983–2009	2,754,626	2,658,974 (96.5)	1,823,697 (66.2)
Low academic achievement	National School Register	1983–1995	1,409,909	1,124,858 (79.8)	869,553 (61.7)
General cognitive ability^d	Military Conscription Register	1983–1992	429,335	299,450 (69.7)	257,268 (59.9)
Criminality	National Crime Register	1983–1989	712,484	670,953 (94.2)	546,208 (76.7)
Violent criminality	National Crime Register	1983–1989	712,484	669,973 (94.0)	545,537 (76.6)
Drug misuse	National Crime Register, Patient Register	1983–1987	486,353	481,044 (98.9)	398,705 (82.0)

Years when individuals can be included in sub cohort.

Excluding individuals with missing values for gender, birth date and/or maternal age at childbirth, who had no possibility of getting outcome (e.g., was not at conscription), and individuals who died/emigrated.

Excluding individuals as in ^b plus exclusion criteria; non-identifiable parents, twins in offspring generation, only inclusion of up to two siblings per nuclear family, only two mothers per extended family.

Only males in sub cohort.