1-20 of 2684 Search Results for


Sort by
Journal Article
Demography (2008) 45 (2): 271–281.
Published: 01 May 2008
...Yong Cai Abstract The fertility level in China is a matter of uncertainty and controversy. This paper applies Preston and Coale’s (1982) variable-r method to assess the fertility level in China. By using data from China’s 1990 and 2000 censuses as well as annual population change surveys...
Journal Article
Demography (2002) 39 (2): 287–310.
Published: 01 May 2002
... arises from the formal mathematics of unstable populations and is similar in spirit to “variable-r” methods. Unlike those methods, however, the new technique does not require specialized computer programming or iterative calculations, and event rates can be calculated directly from cross-sectional data...
Journal Article
Demography (2022) 59 (2): 417–431.
Published: 01 April 2022
... population trends in shaping the population at time t . The overall population growth rate can also be expressed as the weighted average of age-specific growth rates. In this article, we develop a method to decompose the historical drivers of current population growth by recursively employing the variable- r...
Includes: Supplementary data
Journal Article
Demography (2024) 61 (3): 615–626.
Published: 01 June 2024
... changes in fertility, mortality, and migration. However, doing so requires more than 100 years of historical data, meaning that such analyses are possible only in a select few populations. In this research note, we propose an adapted version of the variable- r model to measure contributions...
FIGURES | View All (5)
Includes: Supplementary data
Journal Article
Demography (1969) 6 (2): 161–183.
Published: 01 May 1969
... of conception, given a woman is susceptible R(r, t) probability that at most r con- ceptions are recorded in time t 8 dummy variable used in generat- ing functions and Laplace trans- forms 8 0 state of being susceptible to conception 8 1 pregnant state 8, postpartum nonsusceptible state 179 following birth...
Journal Article
Demography (1973) 10 (1): 37–51.
Published: 01 February 1973
... in the dependent variable 1 that the inde- TADLE 2.-Summary of Data Relating to Urbanization, Marital Differential, and Economic Dependency of Women in 140 Areas of the U.S.8.R.: 1959 Dichotomized Variable by Level of Fertility Based on Crude Birth Rate per 1,000 Population Proportion of Economically Inactive...
Journal Article
Demography (1985) 22 (4): 611–623.
Published: 01 November 1985
... "variable r analysis" (in contrast to the "constant r analysis" of stable populations). Variable r analysis applies, of course, to populations other than the inhabitants of a specified geographic area. Its surprisingly useful applicability to the relation between age-specific fertility and average parity...
Journal Article
Demography (1990) 27 (1): 131–147.
Published: 01 February 1990
... of populations. The third and most recent method (Preston and Coale 1982) is applicable to nonstable populations and is known in the literature as the variable "r" method. In some earlier studies, the three methods were found to have some common features (Venkatacharya & Teklu 1987). In this article Coale's...
Published: 01 December 2021
Fig. 4 Bivariate associations between the percentage of the Black–White gap in neonatal mortality explained by birth weight–specific mortality and state-level variables ( n   =  33 states). Orange markers indicate Southern states. r p   =  Pearson correlation coefficient; r s   =  Spearman More
Journal Article
Demography (1965) 2 (1): 240–249.
Published: 01 March 1965
...." 242 DEMOGRAPHY sum of the two. In other words, we as- sume no interaction effect for the back- ground classification. Here is a model that conveniently represents these assump- tions: In Model (0), Y a is the number of children ever born to the ath wife. R, H, and Ware binomial ("dummy") variables. R...
Journal Article
Demography (1981) 18 (4): 635–643.
Published: 01 November 1981
... Versus TFR in Cross-National Fertility Research 641 Table 2.-Correlations Between Five Socioeconomic Indicators and the Residuals of the TFR-CBR Relationship 1960 1965 1970 Variable r N r N r N GDP per Capita 0.119 108 0.081 81 0.029 64 *Infant Mortality Rate -0.275 93 -0.124 79 0.067 74 Literacy Rate...
Journal Article
Demography (2011) 48 (2): 581–592.
Published: 21 April 2011
... on their means produces virtually identical results). No model contains both birth cohort and marriage cohort given the high correlation of these two variables ( r  = .92). Alternate model specifications are discussed in greater detail in Online Resource 1 . The dependent measure in all analyses is whether...
Includes: Supplementary data
Journal Article
Demography (2000) 37 (2): 175–186.
Published: 01 May 2000
... reporting for individuals linked to the three sources. When they compared death rates from the corrected age distribution with uncor- rected death rates, using the variable-r method (Bennett and Horiuchi 1984; Preston and Coale 1982), they found that rates for African Americans above age 85 increased...
Journal Article
Demography (1993) 30 (2): 175–188.
Published: 01 May 1993
...= Lived outside .15 22 Age at First Marriage 0= <19 .48 72 1= 19 .52 77 Choice of Spouse and Kin Link to Spouse Joined as dummy variable R chose nonrelative .13 19 R chose relative .15 23 Dummy variable Senior chose relative .58 86 Omitted Senior chose nonrelative .14 21 Living Arrangements after Marriage...
Journal Article
Demography (1984) 21 (4): 459–473.
Published: 01 November 1984
... measures and the period variables reveals the reason for this; the life expectancy threshold measure shows a much higher correlation with the 1970s' period variable (r = .52) whereas the literacy threshold-period correlation with the 1970s variable was only .24. As a result, the independent effect...
Journal Article
Demography (1974) 11 (4): 613–627.
Published: 01 November 1974
.... 1973. The Effect of Economic Variables on the Timing and Spacing of Births. Unpublished paper presented at the annual meeting of the Population Association of America, New Orleans, 1973. Sanderson W. , &amp; Willis R. J. ( 1971 ). National Bureau of Economic Research Economic Models...
Journal Article
Demography (2000) 37 (4): 415–430.
Published: 01 November 2000
... ) + (vj + j). (4) The three vectors of level 2 coefficients represent the effects of eight labor market variables (Z j ), which are of primary substantive interest; area dummy variables (R j ) for residence in the northeast, the midwest, and the west (with the south as the omitted category) in most...
Journal Article
Demography (2013) 50 (4): 1217–1241.
Published: 15 January 2013
... of mean annual rainfall, we retain it in the analysis and, as described in the results section, find significant effects on migration despite its limited variation. Table 3 OLS fixed-effects analysis of spatial and temporal variation in the environmental measures Environmental Variable R...
Journal Article
Demography (1990) 27 (2): 233–250.
Published: 01 May 1990
..., this variable is most naturally treated as continuous. As described later, we explored various transformations of size as well as interactions between size and the other covariates. In our final model (model 4) we use the logarithm of size (R), and in order to explore the different effect of this variable...
Journal Article
Demography (1997) 34 (4): 493–511.
Published: 01 November 1997
... = a 2 + Lj~2jX2ji + L kY2k Wki + r, + E2i (1a) (Ib) (Ic) SOCIOECONOMIC EFFECTS ON THE TIMING OF FIRST BIRTHS 497 vidual-level and pair-level factors after controlling for all common, unmeasured pair-specific factors that can be cap- tured by the latent variable T. Thus, T denotes a pair-spe- cific...