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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Am J Phys Anthropol. 2016 Oct 12;162(2):201–207. doi: 10.1002/ajpa.23109

Table 1.

Description statistics. Limited to individuals for which paternal age at conception is available.

Human Chimp
n mean (sd) range (diff) n mean (sd) range (diff)
age 144 61.3 (22.0) 7.4–97.3 (89.9) 40 24.4 (11.4) 6.2–56.7 (50.5)
PACa 144 32.4 (8.2) 19.7–62.9 (43.2) 40 17.7 (6.4) 8–37 (29)
pGPACb 120 34.1 (9.7) 21.1–65.6 (44.5) 7 19.3 (3.7) 14–23 (9)
mGPACc 89 36.2 (11.5) 17.9–69.5 (51.6) 9 19 (10.0) 11–37 (26)
a

paternal age at conception;

b

paternal grandfather age at conception;

c

maternal grandfather age at conception