56:30739 Batey,
Peter W. J.; Rose, Adam Z. Extended input-output models:
progress and potential. International Regional Science Review,
Vol. 13, No. 1-2, 1990. 27-49 pp. Morgantown, West Virginia. In Eng.
"This article presents a critical survey of research on extended
input-output models, emphasizing recent developments in
demographic-economic and socio-economic analysis. Basic principles of
model design and construction are reviewed, by reference to a
representative selection of extended models. Two research
themes--labor market analysis and income distribution--are pursued in
greater detail as examples of the directions of current work. A
comparison is made between extended models and social accounting
matrices."
Correspondence: P. W. J. Batey, University of
Liverpool, Department of Civic Design, Liverpool L69 3BX, England.
Location: Princeton University Library (UES).
56:30740 Brown,
Warren A.; Hirschl, Thomas A. How extension uses
demographic information. Population and Development Program
Working Paper Series, No. 1.04, 1989. 19 pp. Cornell University,
Department of Rural Sociology, Population and Development Program:
Ithaca, New York. In Eng.
"This paper reports findings from a
survey of cooperative extension systems in 50 [U.S.] states plus Puerto
Rico and the District of Columbia. The purpose of the survey is to
determine how many systems have regular access to applied demographic
programs, and what types of activities these programs are engaged
in....The expressed purpose of the cooperative extension system is to
develop programs which link the research and knowledge base of
land-grant universities with society."
Correspondence:
Cornell University, Department of Rural Sociology, Population and
Development Program, 134 Warren Hall, Ithaca, NY 14853-7801.
Location: Princeton University Library (SPR).
56:30741 Heitjan,
Daniel F.; Rubin, Donald B. Inference from coarse data via
multiple imputation with application to age heaping. JASA:
Journal of the American Statistical Association, Vol. 85, No. 410, Jun
1990. 304-14 pp. Alexandria, Virginia. In Eng.
"Multiple imputation
is applied to a demographic data set with coarse age measurements for
Tanzanian children. The heaped ages are multiply imputed with
plausible true ages using (a) a simple naive model and (b) a new,
relatively complex model that relates true age to the observed values
of heaped age, sex, and anthropometric variables. The imputed true
ages are used to create valid inferences under the models and compare
inferences across models, thereby revealing sensitivity of inferences
to prior specifications, from naive to complex. In addition,
diagnostic analyses applied to the imputed data are used to suggest
which models appear most appropriate....It is concluded that knowledge
of the interval widths and heaping process sharpens valid inferences
from data of this kind, and that given a specified process, simple and
easily programmed multiple-imputation methods can lead to valid
inferences."
Correspondence: D. F. Heitjan, Pennsylvania
State University, College of Medicine, Center for Biostatistics and
Epidemiology, Hershey, PA 17033. Location: Princeton
University Library (SM).
56:30742 Huttly,
Sharon R. A.; Barros, Fernando C.; Victora, Cesar G.; Beria, Jorge U.;
Vaughan, J. Patrick. Do mothers overestimate breast
feeding duration? An example of recall bias from a study in southern
Brazil. American Journal of Epidemiology, Vol. 132, No. 3, Sep
1990. 572-5 pp. Baltimore, Maryland. In Eng.
"The problem of recall
bias when reporting breast feeding duration is investigated. Data are
presented from the follow-up of over 1,000 children from a birth cohort
(1982) in southern Brazil....Women who were richer and/or better
educated were significantly more likely to report longer durations,
while those poorer and less educated did not tend to misclassify more
in one direction than in the other."
Correspondence: S. R.
A. Huttly, Universidade Federal de Pelotas, Departamento de Medicina
Social, Pelotas, RS, Brazil. Location: Princeton University
Library (SZ).
56:30743 Mitra,
S. Some ways of incorporating both sexes in models that
become stable. Janasamkhya, Vol. 7, No. 2, Dec 1989. 71-81 pp.
Kerala, India. In Eng.
The author presents "four models of birth
trajectories in which the female age-specific fertility rates have been
assumed to depend on the relative age compositions of both sexes. In
each case, the rates fluctuate but approach their limiting values and
the age compositions become stable."
Correspondence: S.
Mitra, Emory University, Department of Sociology, Atlanta, GA 30322.
Location: Princeton University Library (SPR).
56:30744 Nath, D.
C.; Kalita, P. A two-sex quasi-stable population in the
presence of immigration. In: Population transition in India,
Volume 1, edited by S. N. Singh, M. K. Premi, P. S. Bhatia, and Ashish
Bose. 1989. 463-81 pp. B. R. Publishing: Delhi, India. In Eng.
"In
this paper we have developed a two-sex model with the effect of
migration under the conditions of changing fertility and mortality over
time. It is shown that the results have been the same as those
obtained by [others]...for the one-sex model. Later, we have derived
the computational techniques of the intrinsic growth rates and birth
rates of males and females separately and shown that a combination
(weighted average) of the male and female rates give rise to the common
intrinsic growth rate and birth rate."
Correspondence: D.
C. Nath, Gauhati University, Department of Statistics, Gauhati 781 014,
India. Location: Princeton University Library (SPR).
56:30745 Suchindran,
C. M. Heterogeneous risk models. Janasamkhya, Vol. 7,
No. 1, Jun 1989. 1-19 pp. Kariavattom, India. In Eng.
"This paper
briefly reviews the heterogeneous risk models in demography. With a
specific model, it is shown that in a heterogeneous population, the
marginal hazard need not be monotonic. Procedures described in the
literature to recover individual hazards from marginal hazards without
precise knowledge of structural parameters can lead to biased results.
Strategies of parameter estimation and testing are discussed. The
results are extended to [the] multistate life
table."
Correspondence: C. M. Suchindran, University of
North Carolina, Department of Biostatistics, Chapel Hill, NC 27514.
Location: Princeton University Library (SPR).
56:30746 van Imhoff,
Evert. The exponential multidimensional demographic
projection model. Mathematical Population Studies, Vol. 2, No. 3,
1990. 171-82 pp. New York, New York/London, England. In Eng. with sum.
in Fre.
"This paper presents the multidimensional demographic
projection on the basis of an exponential specification, which avoids
the problems associated with the widely used specification on the basis
of the linear integration hypothesis. It generalizes earlier work by
Gill (1986) on Markov models for closed populations to include the case
of open populations. A numerical illustration is also
provided."
Correspondence: E. van Imhoff, Netherlands
Interdisciplinary Demographic Institute, P.O. Box 11650, 2502 AR The
Hague, Netherlands. Location: Princeton University Library
(SPR).
56:30747 Wilmoth,
John R. Fitting three-way models to two-way arrays of
demographic rates. Population Studies Center Research Report, No.
89-140, Apr 1989. 20 pp. University of Michigan, Population Studies
Center: Ann Arbor, Michigan. In Eng.
"In another paper...we have
suggested that [a] general model...may be a useful means of depicting
the structure of a large array of age-specific demographic rates. In
this report we provide certain technical details necessary for the
successful application of this model. We also give supporting evidence
for its properties under a least-squares fit, which are merely asserted
but not proven in the other paper, and discuss the possibilities for
alternative fitting procedures to ordinary least squares (OLS)....We
begin by discussing the problem of re-expression, followed by two large
sections which outline fitting routines in the OLS and non-OLS
frameworks, respectively. In a final section we discuss possibilities
for application of the model to aggregated data."
For the earlier
article by the author, also published in 1989, see elsewhere in this
issue.
Correspondence: University of Michigan, Population
Studies Center, 1225 South University Avenue, Ann Arbor, MI
48104-2590. Location: Princeton University Library (SPR).
56:30748 Wilmoth,
John R. Variation in vital rates by age, period, and
cohort. Population Studies Center Research Report, No. 89-141, Apr
1989. 40 pp. University of Michigan, Population Studies Center: Ann
Arbor, Michigan. In Eng.
"The analysis of age-specific vital rates
is studied in this paper, with special attention given to the problem
of decomposing an array of rates into factors related to age, period,
and cohort....[The author focuses] on the age and period dimensions and
[derives] an initial description of the matrix structure with regard to
changes...in those two directions. This two-dimensional description is
then augmented by a consideration of residual patterns which seem
clearly linked to cohorts. The empirical section of the paper
describes in great detail the structure of an array of mortality rates
for French males ages 0-89 over the years 1946-1981."
This is a
revised version of a paper originally presented at the 1989 Annual
Meeting of the Population Association of America (see Population Index,
Vol. 55, No. 3, Fall 1989, pp. 375-6).
Correspondence:
University of Michigan, Population Studies Center, 1225 South
University Avenue, Ann Arbor, MI 48104-2590. Location:
Princeton University Library (SPR).
56:30749 Yadava, K.
N. S.; Singh, S. K.; Kumar, U. A probability model for the
number of migrants. Janasamkhya, Vol. 7, No. 2, Dec 1989. 83-92
pp. Kerala, India. In Eng.
The authors present a probability model
to describe the pattern of dependent migrants per rural household in
India. It is based on a compound distribution and is tested on the
distribution of households according to the number of
migrants.
Correspondence: K. N. S. Yadava, Banaras Hindu
University, Centre of Population Studies, Department of Statistics,
Varanasi 221 005, India. Location: Princeton University
Library (SPR).
