Table 1.

Mean age of first sexual intercourse by father status.

	Total Sample			Females Only			Males Only
Father status	First Sex	SD	N	First Sex	SD	N	First Sex	SD	N
Always absent	15.28	2.22	233	15.89	2.02	121	14.63	2.25	112
Partially absent	15.36	2.12	224	15.90	1.72	106	14.88	2.32	118
Always present	16.11	1.78	204	16.33	1.46	95	15.92	2.00	109

Note. Means comparisons conducted using 661 of the 664 offspring with valid report of age at first sex. The remaining 3 offspring (1 male, 2 females) had missing data for father absence.