Volume 63 - Number 4 - Winter 1997

N. Methods of Research and Analysis Including Models

Studies concerned with demographic methods and with methods from other disciplines that have been applied to demographic data as a whole. Includes mathematical demography and studies on methods of estimation and indirect estimation. Methodological studies and models concerned with one demographic variable, such as migration, are coded under the category concerned with that topic and cross-referenced to this heading. Studies on models used to investigate relationships between demographic variables and for the analysis of empirical data are also coded under this heading.

63:40755 Allison, David B.; Heo, Moonseong; Flanders, Dana W.; Faith, Myles S.; Williamson, David F. Examination of "early mortality exclusion" as an approach to control for confounding by occult disease in epidemiologic studies of mortality risk factors. American Journal of Epidemiology, Vol. 146, No. 8, Oct 15, 1997. 672-80 pp. Baltimore, Maryland. In Eng.
This study concerns methods for estimating the effects of chronic disease risks on mortality, and examines the suggestion that subjects dying during the first years of follow-up should be excluded from the statistical analysis. "In this paper, we show that, when confounding due to preexisting disease is present at the start of follow-up, excluding subjects who die in the first few years of follow-up does not necessarily reduce that confounding. Moreover, such exclusion can even exacerbate the bias in the estimate of the effect of exposure."
Correspondence: D. B. Allison, St. Luke's/Roosevelt Hospital, Obesity Research Center, 1090 Amsterdam Avenue, 14th Floor, New York, NY 10025. Location: Princeton University Library (SZ).

63:40756 Axinn, William G.; Barber, Jennifer S.; Ghimire, Dirgha J. The neighborhood history calendar: a data collection method designed for dynamic multilevel modeling. Sociological Methodology, Vol. 27, 1997. 355-92 pp. Washington, D.C. In Eng.
"This paper presents a new data collection method, called the Neighborhood History Calendar, designed to collect event histories of community-level changes over time. We discuss the need for and the uses of this method. We describe issues related to the design of instruments, collection of data, and data entry. We provide detailed examples from an application of this method to the study of marriage, contraception, and fertility in rural Nepal. The paper addresses applications of this same technique to other settings and research problems. We also extend the technique to collection of other forms of contextual-history data, including school histories and health service histories. Finally, we discuss how Geographic Information System (GIS) technology can be used to link together multiple sources of contextual-history data."
Correspondence: W. G. Axinn, Pennsylvania State University, University Park, PA 16802. Location: Princeton University Library (SPR).

63:40757 Hill, Daniel H. Adjusting for attrition in event-history analysis. Sociological Methodology, Vol. 27, 1997. 393-416 pp. Washington, D.C. In Eng.
"This paper will investigate the issue of weighting for panel attrition in event-history models by comparing alternative treatments of sampling weights in a divorce model for members of the 1986 [U.S.] Survey of Income and Program Participation (SIPP). Three distinct weighting procedures are compared. These are based on (1) the initial selection probability weights; (2) the 1986 SIPP panel weights; and (3) the monthly attrition-adjusted weights. The paper also compares these weighted estimates with the estimates of a structural model in which attrition is treated as an error-correlated competing alternative to divorce." The results indicate that in many instances divorces in the SIPP end up being recorded as attrition.
Correspondence: D. H. Hill, University of Michigan, Ann Arbor, MI 48109. Location: Princeton University Library (SPR).

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