Demography is the statistical study of populations and their characteristics, such as births, deaths, migrations, consequences of changes, etc.

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How can assumptions on TFR and life expectancy at birth be used in population projection?

I was reading a report on population projection using cohort component method. There the authors have only stated their assumptions regarding the TFR (total fertility rate) and life expectancy at ...
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15 views

Sample size for entire population to determine sub population?

Let's say a bus company has 500 markets with an average of 10000 passengers each day but some markets as large as 100000 and some as small as 300. How would I determine the simple random sample size ...
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Can age,education level and socioeconomic status be controlled but not as covariates to strengthen an experimental study?

Most ppl include age, education level and socioeconomic status in their demographics just to show their sample of study. But in my case all those 3 factors are predictors of my DV which is prosocial ...
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Residual from Functional Demographic model for fertility

I'm trying to fit a functional demographic model (fdm) to fertility rates using the demography package in R. When I've plotted ...
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Measuring change of participation level in a population after a policy change

I would like to measure the change of a policy in a community, that is, check whether there was a change after the new policy was applied. The old policy required that people had to give away a right ...
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Estimating incidence and prevalence from demographic data

I'm interested in estimating incidence and prevalence of specific diseases in the USA based on the NAMCS data set. However, the data set only records patient/prevalence visits - there is no way of ...
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Need help to understand the equation of stable population

I was reading this paper on non-stable and stable population momentum. There the authors have shown the formula for stable population $Q$ as: $$Q=\dfrac{\int_0^\beta n(x)v(x)dx}{bA_r},$$ $v(x)$ is ...
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51 views

Independence of sexes of children born to a couple

Suppose $100p\%$ of babies born are male. Sometimes one reads that $p\approx 0.505$ or something like that. If a couple has $n$ children, it is often assumed that the sex of each child is ...
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Bhattacharyya Distance for Age/Gender Groups?

I'm calculating distances for groups based on Age/Gender Compositions (to rank their similarity in demographic composition.) I'm working with the following: Men 18-34, Men 35-49, Men 50-64, Men 65+, ...
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Probability of moving house (non-independence problem)

We are analyzing a dataset where we are looking at the probability of individuals moving house, and the factors that predict moving. The problem is that a lot of people are married, and (usually) if ...
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Calculating life expectancy in Stata

I've been looking for resources on calculation of life expectancy uising Stata. Combing Google results so far I've only been able to locate this module: LXPCT_2: Stata module to calculate ...
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Getting started with age demographic projection

I am trying to project the future age distribution of a population within an organization using (raw) data about the current distribution, as well as past data about entries and exits per age cohort. ...
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29 views

How to get stable and life table stationary populations and derive different quantities needed to calculate population momentum?

I was reading an article on population momentum. They have calculated the proportionate age distributions, the mean and variance age of childbearing, the growth rates, birth rates and expectation of ...
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How to combine distributions of inter-connected variables?

Can anyone point me to how I could combine distributions when there's a relationship between the variables? I apologize in advance if this is too basic or if I'm not posing the question perfectly. I ...
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62 views

Extracting meaningful demographic data from ordinal / Likert responses in SPSS

I'm currently working on the findings of my Masters dissertation where I've defined hypotheses, created a questionnaire, and then testing whether a relationship exists between different ordinal ...
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60 views

Meaning of weights in calculating the Myer's blended index

I am struggling to understand the meaning of the weights (coefficients) of the Myer's blended index described in section 3.2 of this PDF. Can someone explain me the reason behind using such ...
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Taking into account population size differences in chi-squared test

I have a group of patients who live in London. They come from the 33 London local authorities and I want to know whether there is any significant variation in where they live. In other words, I want ...