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Reference Period

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Journal Article
Demography (2014) 51 (2): 387–411.
Published: 04 February 2014
... migrated out of the DSS area. Respondents underestimated the age at death of the siblings they reported during the interview, particularly among siblings who had died at older ages (≥45 years). Restricting SSH data to person-years and events having occurred during a recent reference period reduced list...
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Includes: Supplementary data
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Published: 04 February 2014
Fig. 5 The impact of date errors in SSH data on estimates of 45 q 15 . The solid line represents the SSH-reported proportion of adult deaths occurring in an eight-year reference period prior to the SSH survey under the assumptions that (1) there is a fixed number of deaths in the sibships More
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Published: 04 February 2014
as having occurred outside the eight-year reference period based on SSH data (when in fact it occurred in 2004, within the reference period) More
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Published: 10 September 2020
Fig. 4 Sources of error in FBH data. Date displacement refers to events reported to have occurred earlier/later than recorded by the HDSS, leading to erroneous exclusion/inclusion from the reference period. Age understatement refers to errors resulting from the fact that a respondent More
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Published: 01 October 2021
Fig. 4 Combined effects of prenatal and postnatal period and birth interval with younger sibling. The reference category is a birth interval of 2–29 months with previous sibling, perinatal period of 6 months after birth. More
Journal Article
Demography (1973) 10 (3): 469–478.
Published: 01 August 1973
... Association of America 1973 1973 Reference Period Housing Unit Current Population Survey Dual System Survey Experiment References Birnbaum , Z. W. , & Sirken , Monroe G. ( 1965 ). Design of Sample Surveys to Estimate the Prevalence of Rare Diseases: Three Unbiased Estimates...
Journal Article
Demography (2007) 44 (4): 729–745.
Published: 01 November 2007
... Population Association of America 2007 2007 Reference Period Unintended Pregnancy Fertility Preference Unwanted Fertility Nonnumeric Response References Adetunji J.A. ( 1998 ). Unintended Childbearing in Developing Countries: Levels, Trends, and Determinants DHS Analytical Reports...
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Published: 05 July 2017
are 1991–2009. Reference period is 1965–1990 More
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Published: 04 February 2014
Fig. 2 Relative risks of divorce by marriage duration and period (Model 4). The reference point is at year 5 for each model. Source : Author’s calculations are based on the data from the Finnish Longitudinal Fertility Register More
Journal Article
Demography (2015) 52 (1): 315–327.
Published: 31 December 2014
.... ( 6 ), which shows that the estimates for the middle categories are identifiable without additional restrictions. Because the type of parameterization in the default IE is effect coding with the unweighted mean as reference point, the sensitivity will be lower the more categories of age, period...
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Published: 18 October 2013
Fig. 2 Nature of the experimental design, by year and age of the child. Darkly shaded cells represent fathers treated by the reform after the phase-in period, lightly shaded cells represent fathers treated by the reform during the phase-in period, and white cells represent nontreated fathers More
Journal Article
Demography (1984) 21 (2): 217–233.
Published: 01 May 1984
..., existence of non-zero net intercensal migration, age dependence in the completeness of death registration, and misreporting of age at death and age in the population. We demonstrate the use of the method in an application to data referring to Argentine females during the period 1960 to 1970. 9 1 2011...
Journal Article
Demography (1971) 8 (1): 103–122.
Published: 01 February 1971
.... Measurement of the biases is accomplished by application of standard ellipse techniques to the transformed distributions. Data for the study traces migrant lifelines for a sample of households in Cedar Rapids, Iowa, for the period 1950 through 1965. Differences in locational and social-economic...
Journal Article
Demography (1967) 4 (2): 820–837.
Published: 01 June 1967
... on the mortal- ity of that population during the inter- censal period. The information is partial, since, unless reference is made to some ad- ditional data (for example, to birth rec- ords), only the mortality of the population already alive at the time of the first census * University of Michigan. may...
Journal Article
Demography (2023) 60 (6): 1711–1720.
Published: 01 December 2023
... measure, we find notable increases in agreements without payments due in the most recent period. These findings underscore the importance of differentiating stock and flow, and by marital history, in considering the proportion with agreements as an indicator of the effectiveness of current policy...
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Includes: Supplementary data
Journal Article
Demography (2013) 50 (4): 1387–1395.
Published: 21 December 2012
... by excluding person-year observations before and after the period of interest. Henceforth, we refer to this improved method as the “ P ait method.” More detailed explanations of the P ait method and its application to real data are included in the online supplement to this research note (Online...
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Includes: Supplementary data
Journal Article
Demography (2021) 58 (5): 1955–1975.
Published: 01 October 2021
... , as measured by λ . A positive and significant estimate of λ indicates that decreases in husbands' decision-making dominance between earlier and later periods in the reference cell i are significantly associated with decreases in husbands' decision-making dominance in neighboring cells between...
FIGURES
Includes: Supplementary data
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Published: 01 December 2023
-in-differences estimator), are plotted. Vertical bars denote the 90% confidence interval for each coefficient estimate. The reference period (denoted by “–1”) represents the year of WR implementation. Equation (2) controls for all covariates listed in the notes to Table 3 . See the text for details. More
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Published: 04 February 2014
Fig. 1 Lexis diagram representation of date/age errors in SSH data on siblings’ deaths. On this diagram, the survey takes place at time t. We hypothesize a reference period of eight years, which is represented in thicker vertical lines. The thicker horizontal lines represent the age interval More
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Published: 28 August 2019
Fig. 2 2D-APC graph of the solution line. The solid black line denotes the solution line, with θ 1 = α + π, θ 2 = γ + π, and θ 2 – θ 1 = γ – α. Dashed lines refer to values in the parameter space when α ∗ , π ∗ , or γ ∗ are set to 0. Hollow circles denote the age-period and period-cohort More