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. Author manuscript; available in PMC: 2012 Mar 1.

Published in final edited form as: Evol Hum Behav. 2011 Mar 1;32(2):79–89. doi: 10.1016/j.evolhumbehav.2010.08.002

Table 4.

Survival analysis (Cox Proportional Hazards Model) of impact of age at father's death on age of first birth

	Men			Women
	OR^a	St. Err.	Sig.	OR	St. Err.	Sig.
All ages	0.997	0.016	0.874	0.992	0.018	0.678
Early Half^b	0.986	0.020	0.469	0.983	0.021	0.398
Later Half^c	1.021	0.030	0.497	1.018	0.036	0.621

For men, N=469, 469, 160 for All Ages, Early Half, and Later Half respectively; For women N=457, 457, 160.

^a

Odds ratio.

^b

For men this includes ages up to 23 and for women up to age 19.

^c

For men this includes ages >23 and for women >19.