Abstract

Despite the apparent discrepancy, the scalar increment-decrement model of Schoen (1975), described by equations (3) and (4), is consistent with the Rogers-Ledent matrix formulation shown in equation (I). Either approach may be preferable in certain specific instances. In general, however, the greater power of the matrix formulation and its more explicit recognition of both age and region give it substantial advantages over the scalar model.

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References

Rogers, A., & Ledent, J. (
1976
).
Increment-Decrement Life Tables: A Comment
.
Demography
,
13
,
287
290
. 10.2307/2060807
Schoen, R. (
1975
).
Constructing Increment-Decrement Life Tables
.
Demography
,
12
,
313
324
. 10.2307/2060768
Schoen, R. (
1976
).
Reply to Rogers and Ledent
.
Demography
,
13
,
291
291
. 10.2307/2060808