Questions tagged [demography]
Demography is the statistical study of populations and their characteristics, such as births, deaths, migrations, consequences of changes, etc.
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How to report a difference in means - Demographics
First of all sorry for the question, I'm having a hard time with statistics :)
I have conducted a survey for my thesis and am currently analyzing and reporting the results. At the end of my survey, I ...
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What is the best way to analyze differences in demographics data among groups of different sizes
I have groups of individuals in a population. These groups have different sizes--for example, group 1 has 50 individuals and group 2 has 1000 individuals. I want to show the differences in the groups' ...
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How to compare U.S. Census demographic data to a population-level dataset? E.g. how to approach a question like are women underrepresented on boards?
I have a population-level dataset of all people who testified on environmental legislation in a single year. I have data on all witness's ages, races, genders, and ethnicities. This dataset is not a ...
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is bayesian poisson regression remotely relevant in this scenario?
I am working with data collected in a community. We know the basic information about the community, let's say the racial composition is 60% black and 40% white, in a city of population = 500,000. I ...
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Help making inferences from interactions within nested GLMM?
I want to model survival outcome as a response to stem length for a plant species. All individuals within plots were tagged and sampled in year 1, then re-found and sampled again in year 2, with an ...
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Difference of death rate and probability of death
In the life table, two values are related to death. One is the death rate, by definition,
$$ m_x = \frac{d_x}{n_x}$$
Another one is the probability of dying:
$$ q_x = \frac{d_x}{l_x}$$
The numerator ...
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How can the fertility rate be below 2 but the number of births is greater than deaths (South Korea)?
I read an article published in 2020 which claimed that the South Korean population had declined "for the first time", the number of deaths (~300,000) outpacing births (~275,000). However, ...
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Best method to analyse state-level COVID outcomes
I have a dataset that records COVID outcomes (cases, deaths) daily in a tally for the 50 states of the USA. I want to find the influence of various state-level continuous (e.g. percent of seniors in a ...
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Age adjustment or Age standardization state of the art?
I want to run some comparisons of a quantity between different populations. Such quantity comes from a model that includes, among other variables, the variable age. So, one of the variables affecting ...
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How to combine state-level COVID-19 vaccination rates with national demographic data at the individual level?
I’m investigating possible correlations between the COVID-19 vaccination rate in the United States and the results of a long-running survey of scientific personality traits like "Agreeableness&...
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Population growth projection
Que ) Population grows in such a manner that [1/P(t) ] dP(t)/dt is a linear function of log P(t) where P(t) is the population size at time t . Obtain the explicit expression for P(t)*
In this question ...
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How to group countries with similar age distributions?
How can I group the world's 200-odd countries into (say) ten groups, with each group's countries having 'similar' age distributions?
I want to compare COVID-19 fatality rates across countries. But the ...
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How can both life expectancy and death rate increase over 70 years time for a country?
I see death rate and life expectancy for Greece.
For the first there is a constant growth from 1994 which is envisaged to grow up to 2068.
For the latter there is a constant grown from 1950 which is ...
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Covid-19 and life expectancy
A public figure in my home country said the following:
"The life expectancy in our country is 82 years. The average age of those who die of covid-19 is also about 82 years. Hence, on average, ...
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Why does the US death rate not "match" life expectancy
From the CDC (https://www.cdc.gov/nchs/fastats/deaths.htm):
Death rate: 863.8 deaths per 100,000 population
Life expectancy: 78.6 years
Now in a static situation I ...
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A reference request for a population statistic---experienced population density?
We all know that countries (for example) have population densities, but suppose we want to know what is the actual experienced population density (that is, if, say, in Sweden 95% of the population ...
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How to test which factors are responsible for a change in a variable over time?
I have survey data from two waves: one in 2019, one in 2020. There is a large change in one of the survey answers, and I would like to test which respondent characteristics are responsible for that ...
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How to Describe Interaction Between Variables
Say I have two demographic variables, job$\in{j_1, j_2}$ and
lives$\_$alone$\in${YES, NO}.
I also have N books $B_1$, $\ldots$, $B_N$, each labelled with a genre that I know in
advance, out of {...
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Including multiple-select race/ethnicity in statistical models
I'm performing some survey research that has a strong demographic component. During the survey participants are asked to select any races they identify with, along with a number of other demographic ...
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Viral topics. How to describe and characterize bumps in time series of tag-activity on Meta Stack Exchange
Background
There is much dissatisfaction on StackExchange. This can now be covered in over 250 questions on meta (see 1 and 2). In response to that I made a recent meta-post and supported it with the ...
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Can a k-means cluster use different measures for homogeneity and heterogeneity?
TL;DR: Is there an existing k-means clustering algorithm that can have different weights for the (minimized) in-group distance measure and the (maximized) between-group measure? Or, better yet, can ...
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How can I construct a confidence interval for the age dependency ratio?
Say I have a simple random sample of people from a given country, and I estimate the elderly dependency ratio in the population by taking the ratio of the number of people aged 65+ over the number ...
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Representation of $l_x, d_x, L_x, T_x$
There are some problems in my textbook where a life table is given, with some of the entries missing. Based on the given entries, I have to fill up the complete life table.
Suppose it is given $l_0 = ...
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I'm comparing multiple demographics across multiple samples, Chi-square test or 2 sample t-test
I would like to compare the demographics of people my company serves with the demographics contained in a subset of the American Community Survey 2017 data. The first set (n=35751) of data is a person-...
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Can someone explain homicide-related death rates?
If I see a statistic of homicide-related deaths per 100,000 is that per 100,000 deaths therefore giving an expected probability of death when dividing one by the other? or is it deaths by homicide per ...
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Estimation of a population number
Suppose that we know the population number $n$ of a country in $2014$ for people aged between $0$ and $19$ years what would be a good simple way to estimate the population number between $1$ and $18$ ...
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Concept of Stationary Population
In stationary population, there can be different probabilities for death in a given year for different age groups but these probabilities don't change over time. So the probability a 28 year old will ...
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"Number of Persons" instead of "Number of Person-years" in Stationary Population [closed]
I have learnt that the life table function $_{n}L_x$ is the number of person-years lived by the cohort between ages $x$ and $x+n$.
But for stationary population, $_{n}L_x$ is defined as the number ...
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Non-monotone hazard functions
I should start with the caveat that I am relatively new to Survival analysis. I was watching a Hulu documentary about Crocodiles last night, and they mentioned that baby crocodiles have a low chance ...
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Distinction between "Mid-year population" and "Number of people alive"
Suppose
$D_i=$ Observed number of deaths in the age group $(x_i, x_{i+1})$,
$P_i=$ Mid-year population for age group $(x_i, x_{i+1})$,
$N_i=$ Number of people alive at $x_i$ among whom $d_i$ ...
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Probability Vs Rate
Suppose $_{n}q_x$ is the $\textbf{probability}$ of dying between age $x$ and $x+n$.
And $_{n}M_x$ is the age-specific death $\textbf{rate}$ in the observed population in the interval $(x, x+n)$. The ...
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Sparkline type visualisation of demographics in papers (introducing new 'non-standard' visuals)
It seems typical to include only basic statistics on subject demographics within papers (i.e. mean, max and min). It seems to me that having a knowledge of the actual distribution would be provide ...
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Propensity Score Matching on demographic baseline
A client asks for a PSM on gender for their big dataset of >10000 cases.
About 20 variables are supposed to be included, most of them binomial.
They hypothesize, that a certain treatment has worse ...
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How to get the number of target audience?
I am currently working on a project, a sample start-up. Suppose I have these data:
$N$ = total population.
$n_1$ = number of mall shoppers.
$n_2$ = number of people aged from 18-65.
$n_3$ = number ...
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Structural Equation Modeling with ordinal dependent variable and categorical independent variable
I'd like to do a structural equation modeling for an ordinal dependent variable. Moreover, I have ordinal and categorical independent variables in the model.
The ordinal dependent variable is the ...
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Age specific population interpolation: Why Cubic Spline interpolation is not giving sum equal to original sum
Because of Age heaping, I want to smooth age-specific population derived from the census of Pakistan. The Cubic spline is assumed as an appropriate choice. However, the fitted spline is not giving the ...
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What does "mean age at childbearing" mean? [closed]
I'm having trouble putting this into plain English.
According to the UN World Population Prospects glossary it means:
The mean age at childbearing is the mean age of mothers at the birth of their ...
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Log-linear analysis of transition matrices using R
I have some demographic transition matrices that I want to compare using a log linear analysis, but am having some trouble with model construction in R. I have read through several tutorials on log-...
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How to draw a map of a cluster analysis results
I have performed k-mean clustering on a demographic data set. Now I wish to show the results on a (geographical) map, i.e. I want to show the clusters that I got after the analysis in a map. Can ...
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How do I use American Community Survey income estimates and standard errors in an error-in-variables model?
Income distributions tend to be highly skewed. Yet the American Community Survey (ACS) provides only two summary statistics for its median income estimates in small areas: the mean estimate and a ...
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Should I perform paired t-test or not?
I have the following human population data with me (based on a census) -
Number of women in each educational level (like Illiterate, literate but less than primary, high school, graduate). For the ...
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Statistics for ordinal data
I have some ordinal data based on a population survey. My $X-axis$ consist of age groups $(<15 , 15-19, 20-24 . . . , 45-49$ years$)$ . On the $Y-axis$, I have proportion of certain population. And ...
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My fertility simulation is not matching reality
Using data from US vital statistics I created a simulation that was based on the number of children a woman has over her lifetime as follows (out of 10000):
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How to model demographics
I tried assuming the number of children a woman has is a Poisson distribution. So, for the US where the mean number of children per woman is currently 1.87, it yields a probability mass function like ...
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Formula for Cohort Fertility Rate
I understand the definition of Cohort Fertility Rate as the average number of live births that a woman born in a particular year has had by the end of her reproductive life. But is there a formula to ...
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Comparing Crude Death rate of two population
As we all know that the formula for crude death rate is $$CDR = \frac{D}{P} \times 1000$$ where $D$ is the totla number of deaths(during a calender year) among residents of a community and $P$ is the ...
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What are the best method for presenting demographic data?
I have a large dataset of people, and connected demographic data, like age, gender and place of residence.
I want to present a typical person from this dataset, as a presentation technique.
Should I ...
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UK population and NHS spending projections
Say I want to make some projection about the size of the UK population 25 years from now and consider the impact of this population growth on national health spending. Is the following approach ...
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What testing method can be used with demographic data to compensate for possible non-response bias?
(Hello CrossValidated, first poster here, so please have mercy with any transgressions of mine!)
For my thesis, I am currently researching the correlation between stance to organizational change and ...
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How to find 5-year survival probability of newborns from a life table?
I was trying to learn cohort component method for population projection from this link of the webpage of Measure Evaluation. To project the population forward using cohort component method, when the ...
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