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Journal Article
Demography (1995) 32 (2): 139–157.
Published: 01 May 1995
... © Population Association of America 1995 1995 Random Error Term Female Status World Fertility Survey Polygynous Marriage Socioeconomic Status Variable References Alexander P. ( 1986 ). Labor Expropriation and Fertility: Population Growth in Nineteenth Century Java . In W...
Journal Article
Demography (2012) 49 (3): 857–865.
Published: 03 June 2012
.... The general model can be expressed as where LPOP it is the log of population in district i in year t , T t is a time trend, FLU t is a dummy variable defined as and ε it is a random error term. In the random-coefficients version of the model, π 0 i , π 1 i , π 2 i , and π...
FIGURES
Journal Article
Demography (2015) 52 (5): 1627–1650.
Published: 10 September 2015
... a heavy-tailed t distribution on the random error terms ε c , t rather than a normal distribution would produce narrower prediction intervals. However, we found that the normal model achieved better calibration of the main prediction intervals of interest—namely those of probability 95 % and lower...
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View articletitled, Bayesian Probabilistic Projection of International Migration
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for article titled, Bayesian Probabilistic Projection of International Migration
Includes: Supplementary data
Journal Article
Demography (1982) 19 (2): 191–210.
Published: 01 May 1982
... as an annual death rate, but as an average over the t postcensal years. Since the average death rate has a smaller variance than any individual year's death rate, the por- tion of the total variance of the forecast error attributable to the random distur- bance term must be divided by t (Draper and Smith, 1966...
Journal Article
Demography (1978) 15 (4): 487–497.
Published: 01 November 1978
... estimate of k important. Alternatively, if it is assumed, as above, that the level of fecundity [n(x rather than D RAT, varies stochastically in the population according to a multiplicative random error term fit, which implies an age-independent random error for the age-specific rates, then with the above...
View articletitled, Age, biological factors, and socioeconomic determinants of fertility: A new measure of cumulative fertility for use in the empirical analysis of family size
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for article titled, Age, biological factors, and socioeconomic determinants of fertility: A new measure of cumulative fertility for use in the empirical analysis of family size
Journal Article
Demography (2013) 50 (6): 2187–2208.
Published: 20 June 2013
... effect, X ijt is a vector of characteristics that vary across children in the same family, CA ijt is the child’s measured cognitive ability, and is a random error term. The coefficient is the parameter of primary interest and represents the impact that cognitive ability has on parental...
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Journal Article
Demography (1983) 20 (2): 147–161.
Published: 01 May 1983
... + alA + azAz + a3A . YRea + a4A z . YRea + asA . Wea + a6A z . Wea + a7Cea + asA . Cea + a9A z . Cea + (2) where A is age, YR is relative income, W is the average female wage rate, C is cumulative cohort fertility, and u is a random error term assumed to be nor- mally distributed with zero mean...
Journal Article
Demography (2015) 52 (5): 1703–1728.
Published: 03 September 2015
... of all covariates, that is, each vignette location can be represented simply as a constant (α j ) plus a random error term (ε ij ; assumed to be normally distributed with mean zero): Model A : V i j = α j + ε i j . For model identification, α 1 is set to 0...
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View articletitled, Promises and Pitfalls of Anchoring Vignettes in Health Survey Research
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for article titled, Promises and Pitfalls of Anchoring Vignettes in Health Survey Research
Includes: Supplementary data
Journal Article
Demography (2000) 37 (4): 415–430.
Published: 01 November 2000
.... A second way to control for unob- served heterogeneity is to include a random-effect or fixed- effect term as a stand-in for the relevant unobserved charac- teristics of a labor market. All level 2 equations include a special random error component (as described below), but a fixed-effect term may...
Journal Article
Demography (1996) 33 (2): 153–165.
Published: 01 May 1996
... in the interval; Z represents ob- servable variables influencing fertility, such IJas use of fertil- ity control; and E. is a random error term. Rosenzweig ~nd Schultz point out two significant diffi- culties in estimating such a function. First, fecundity, as em- bodied in the 11 term, is not directly observable...
Journal Article
Demography (2019) 56 (2): 707–728.
Published: 28 January 2019
... of calendar years, with a downward step from December to January of 0.32 HAZ points. We show how that asymmetric sawtooth pattern can readily arise by random misreporting of months within years. We term this pattern the calendar-year artifact . Random errors in MOB produce a nonrandom pattern of HAZ because...
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View articletitled, Misreporting Month of Birth: Diagnosis and Implications for Research on Nutrition and Early Childhood in Developing Countries
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for article titled, Misreporting Month of Birth: Diagnosis and Implications for Research on Nutrition and Early Childhood in Developing Countries
Includes: Supplementary data
Journal Article
Demography (2021) 58 (4): 1547–1574.
Published: 01 August 2021
... i , t – 1 + ε i , t , (2) where the new term L i , t – 1 is the lagged value of subjective health; ρ t , t – 1 is the autoregressive regression (AR) coefficient that estimates the magnitude of lagged effects; and ε i , t is the random error that varies...
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View articletitled, Trajectories of Subjective Health: Testing Longitudinal Models for Self-rated Health From Adolescence to Midlife
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for article titled, Trajectories of Subjective Health: Testing Longitudinal Models for Self-rated Health From Adolescence to Midlife
Includes: Supplementary data
Journal Article
Demography (1985) 22 (1): 115–123.
Published: 01 February 1985
... error are incorporated in a model of couple fertility expectations, proxy reports are valid indicators of spouse desires. In particular, there is little evidence that proxy reports are affected by systematic errors arising from projection of own beliefs onto the spouse. For desired family size, random...
Journal Article
Demography (2013) 50 (1): 237–260.
Published: 27 October 2012
... also to the Gompertz and logistic diffusion models (discussed in the next two sections). Under random walk with drift as the underlying linear process, the prediction variance for a k -step-ahead prediction is (8) where is the variance of the error term , g t is the value...
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Journal Article
Demography (1980) 17 (1): 103–114.
Published: 01 February 1980
... term. The results given in Table 1 would suggest for large populations extrapola- tions on the order of standard errors of .001 to .002 for 10,000 informants, before which point any non-random errors would become more critical. It might be, of course, that errors around .015 for a hundred informants...
Journal Article
Demography (1986) 23 (1): 105–126.
Published: 01 February 1986
.... The model, a stochastic version of familiar component projection methods, is based on a demographic interpretation of products of random matrices (Furstenberg and Kesten 1960). The second model-based method uses the estimators of the long-term growth rate and long-term variability derived by Heyde and Cohen...
Journal Article
Demography (1982) 19 (4): 447–458.
Published: 01 November 1982
...R. Bairagi; K. M. A. Aziz; M. K. Chowdhury; B. Edmonston Abstract Age data for 3,393 children, six years of age and under, in rural Bangladesh are analyzed for the level and pattern of age misstatement. Random error, age heaping at whole years, and preferences for particular ages are found...
Journal Article
Demography (2001) 38 (3): 357–361.
Published: 01 August 2001
... Selection Bias as a Specification Error . Econometrica , 47 , 153 – 61 . 10.2307/1912352 Moulton , B. ( 1986 ). Random Group Effects and the Precision of Regression Estimates . Journal of Econometrics , 32 , 385 – 97 . 10.1016/0304-4076(86)90021-7 Solon , G. ( 1999...
Journal Article
Demography (1980) 17 (4): 429–443.
Published: 01 November 1980
... is: n, = Ii + rid, - tl)+ U; (1) where n, is children ever born, d, is the number of child deaths and U; is a random error, Ii and aare the means of n, and d, respectively. Cross-sectional data will be used so the i indexes couples. The regres- sion coefficient r indicates the rate of re- placement...
Journal Article
Demography (1978) 15 (2): 223–233.
Published: 01 May 1978
... Characteristics Using Ratio-Correlation 225 variable k occurring in the ith county during t l , Xl k is the number of observations of variable k occurring in the state during t, (Xk = L Xi k ) , and E is a random error term. Analogous statements can be made for the variables at to. For years subsequent to t l...
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