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Genus

Journal of Population Sciences

Table 4 Age-specific fertility values (f j ) for three mean ages of fertility (μ)

From: The time to decline: tracing a cohort’s descendants in below replacement populations

Age

Mean age of fertility (μ)

25

29

33

15–19

0.360

0.200

0.060

20–24

0.430

0.310

0.180

25–29

0.110

0.210

0.250

30–34

0.070

0.120

0.240

35–39

0.015

0.100

0.160

40–44

0.010

0.050

0.100

45–49

0.005

0.010

0.010

All ages

1.000

1.000

1.000

  1. Note: The mean ages are calculated based on age at the end of each age interval, per Eq. (3). That mean age is also the mean implied by the dominant left eigenvector of matrix F in Eq. (6)
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