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Simple Proportion

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Journal Article
Demography (1972) 9 (4): 617–624.
Published: 01 November 1972
... the grade and the proportion of those leaving the school system. Afterwards, we set up a system of equations leading to the distribution of the entrants in the cohort according to the levels of their educational attainment, a system of equations for which a simple solution will depend on two assumptions...
Journal Article
Demography (1973) 10 (1): 113–121.
Published: 01 February 1973
...Donald B. Pittenger Abstract It is suggested that a useful component of a fertility simulation would be proportions of females sterile by age. Data on this phenomenon are rather limited, but they indicate that proportional sterility may not easily be described by a simple function. We propose...
Journal Article
Demography (1992) 29 (3): 343–356.
Published: 01 August 1992
...Barbara A. Anderson; Brian D. Silver Abstract We describe a simple measure of fertility control: the proportion of all births from the age-specific fertility schedule that occurs among women by age 35. This measure has broad applicability because it does not require information on marital fertility...
Journal Article
Demography (1991) 28 (1): 41–63.
Published: 01 February 1991
... proportionate and absolute thresholds, all of which produced essentially the same results." Table I presents the matrix of neighborhoods in our sample cross-classified by ethnic structure in 1970 and 1980 to reveal processes of structural change in the 20,081 census tracts under study. Cell percentages...
Journal Article
Demography (1966) 3 (2): 319–331.
Published: 01 June 1966
...” surveys employed a 25 percent simple random, though non-overlapping, sample of married women 20–44 years of age whose husbands were living. The only difference in design and execution was the inclusion in the resurvey of questions about the action program. Barring one or two exceptions...
Journal Article
Demography (2018) 55 (4): 1447–1473.
Published: 02 July 2018
... derived. We present a method of estimating appropriate weights for couples that extends methods currently used in the Demographic and Health Surveys (DHS) for individual weights. To see how results vary, we analyze 1912 estimates (means; proportions; linear regression; and simple and multinomial logistic...
Includes: Supplementary data
Journal Article
Demography (2022) 59 (3): 877–894.
Published: 01 June 2022
...-specific fertility proportions to derive new explicit relationships between period and cohort fertility. In short, period total fertility is approximately equal to the total fertility of the cohort born a generation earlier, with a modest additive adjustment. A simple relationship also links both period...
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Includes: Supplementary data
Journal Article
Demography (1984) 21 (3): 347–360.
Published: 01 August 1984
... is extremely high, a fairly simple equation for such estimation can be constructed. The number of Kims listed in the published telephone directory for a community, the mean size of the Kim households, the residence telephone subscription! listing rate, and the proportion of Kims are the factors included...
Journal Article
Demography (1966) 3 (2): 378–392.
Published: 01 June 1966
... but inferior to nonmigrants residing in Bombay. The work participation rates of migrants were higher for every age group than for resident nonmigrants; the proportion of employees was higher; and there was evidence of migrant concentration in industries and occupations requiring less skill, less education...
Journal Article
Demography (2015) 52 (3): 967–988.
Published: 08 May 2015
... it by quantifying the advantages or disadvantages of the various groups derived from their occupational sorting. For that purpose, we have developed an index that measures the per capita monetary gain/loss of a group, derived from its segregation, as a proportion of the average wage of the economy. This simple...
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Journal Article
Demography (1986) 23 (3): 351–365.
Published: 01 August 1986
... 1986 Family Planning Female Sterilization Sterilization Rate Marriage Duration Simple Proportion References Clapp and Mayne, Inc. 1974. Report on a Puerto Rican Survey of the Attitudes Toward Population and Family Planning (preliminary report), San Juan, Puerto Rico, October 1974...
Journal Article
Demography (1983) 20 (1): 1–26.
Published: 01 February 1983
... endogenous and ex- ogenous factors. Another rationale for such a test would be methodological: Trussell and Preston (1982) found that simple methods yielded the same covar- iate effects estimates and tests of signifi- cance as did the proportional hazards methodology. If there are important in- teractions...
Journal Article
Demography (1970) 7 (1): 19–29.
Published: 01 February 1970
... their lifetime (7T2), and their variances for simple ran- dom sampling have been reported else- where (Greenberg, Abul-Ela, Simmons, and Horvitz, 1969). They may be sum- marized as folIows: Assuming 7TY known, the estimate of the proportion of women having an abor- tion during the past year is (1) A - 'lry(1 - P...
Journal Article
Demography (2010) 47 (3): 719–733.
Published: 01 August 2010
... indicators, family background, migration status, and age at marriage. The hazard in the simple proportional hazard model can be written as follows: h(t | X(t)) = h0(t)exp(X(t (1) T hat is, the hazard at each point in time factors into two components: one that depends only on time (h0(t and the other...
Journal Article
Demography (1983) 20 (2): 227–234.
Published: 01 May 1983
... LifeTables by Survival-Mortality Ratios 229 then be expressed in terms of a simple age subscript and rewrite (9), after ap- differential equation, namely, propriate simplifications, as (12) dl(t)/dt = h(tt)[1 - I(t)] (4) where h(t) stands for the constant of proportionality at time t for all ages. Thus, when...
Journal Article
Demography (1973) 10 (3): 459–467.
Published: 01 August 1973
...Suddhendu Biswas Abstract The purpose of the present communication is to generalize a model of Brass’s (1958), relating to the probability distribution of births to mothers with completed fertility. A simple method of estimating the parameters of the model, based on successive iterations, has been...
Journal Article
Demography (1976) 13 (2): 225–233.
Published: 01 May 1976
... is calculated as that age asuch that the proportion of the stable popu- lation below age aequals the proportion single. This description assumes universal marriage; if all do not eventually marry, a slight modification, explained below, is re- quired. While this procedure has the ad- vantage of being simple...
Journal Article
Demography (2006) 43 (3): 553–568.
Published: 01 August 2006
... of relatively few women). Table 1 examines the proportionality assumption from a different perspective. Using calculations based on both observed and proportionalized rates, it compares cohort propor- tions at each parity (0 through 6) at ages 25, 35, and 50, as well as the proportion of cohort life lived...
Journal Article
Demography (1974) 11 (1): 119–130.
Published: 01 February 1974
... exerted by the large changes occurring at ages under five. Nor does equation (10) say that the proportion of the stable population at age a will rise if the proportionate in- crease in the probability of survival to that age is greater than the "average" proportionate increase. When mortality declines...
Journal Article
Demography (2002) 39 (2): 287–310.
Published: 01 May 2002
... interpolated exact-age values, using simple averaging of adjacent age groups 14. It is possible to convert to an approximate hazard rate by dividing by the average proportion who were not sterilized in the age-time cell. In the example, this divisor would be one minus the average of the four corner values, 1...