Questions tagged [cross-section]

Cross section data is drawn at a single point in time as a sample of many different units from a certain population.

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On the use of FEs in repeated cross section

I have a repeated cross-section of state representative household surveys in the United States (20 years). Note the data is not longitudinal. For each year, the data was collected on a brand new ...
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28 views

Transforming time series to cross-sectional data

I believe i understand the basics of both time series and cross-sectional data and how they are collected. Doubt is why not convert some of the time series to traditional cross-sectional data. Say i ...
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23 views

Using longitudinal and cross-section data together

Suppose I have longitudinal data (for three time periods) on divorce (yes, no), and occupation (categorical). I also have data, at time 3, on financial stress (score from 0 to 10). Two individuals in ...
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How to convert longitudinal dataset into 1 single dataset? [closed]

I have a longitudinal dataset that I need to convert to a sort of cross-sectional / single time point dataset. I have numerical (including %) and categorical variables. How should I treat each ...
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12 views

prediction model for a cross sectional data for ONE YEAR

I have a set of cross sectional database in which are the scores of 30000 students in different subjects plus their sex and type of school, it looks like this (13 explanatory variables) All these ...
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11 views

Sample size in Cross-sectional study

I have to calculate the sample size for a cross-sectional study conducted on children of different ages who suffered from neonatal stroke. The input variables are descriptive (weight at birth, ...
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16 views

Modelling longitudinal data using cross sectional data

I only have access to cross sectional data (surveys taken at one date after variable days after exposure). I want to show the relationship between the days after exposure and the survey measure but am ...
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1answer
21 views

Help for a cross sectional multiple regression

I am trying to make a regression on the following model: Y = β0 + β1 X1 + β2 X2 + β3 X3 + β4 X4 error I am studying the effect of X1 on Y and added X2, X3 and X4. The data I have is cross sectional ...
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44 views

Testing for independence in clustered cross-sectional data

I am developing a multiple regression model using Expert-survey data on different ideological positions of political parties in Europe. So my dataset contains >200 political parties with different ...
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23 views

When to use Time Series Cross Section vs. Single period aggregate difference cross section?

Im struggling with understanding when I should be using time series vs a single time aggregated period cross sectional. Say I have many customers and i want to understand the impact of marketing on ...
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22 views

Panel data: how to choose cross-sectional units in hierarchical model

I am working with panel data and I have flight delays for multiple airlines as a variable of interest. In order to proceed with estimations, I need to choose the cross-sectional units. I have a choice ...
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16 views

Compare Moran I at different time periods

Consider the case of X agents distributed in a geographical space. Their number and spatial position is fixed over time. However, their characteristics change from one time to another. I can compute ...
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18 views

Control variable (country) in cross-sectional data

I have cross-sectional data like city country treated control1 outcome 001 A 1 123 12 And I want to run CIA based regression $outcome = beta0 + ...
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16 views

Comparing groups from two cross-sectional datasets

I have two cross-sectional datasets, random sample, from the same country and with the same questionnaire that was administered 5 year apart (non panel data, so different people). I would like to ...
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how to control for intertemporal changes of a very large pooled cross-sectional dataset of over 4 years without treating it as a panel?

does treating a cross-sectional pooled dataset that goes across 4 years mean that I shouldn't care about stationarity and such (as opposed to if it was a panel dataset)?
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20 views

What is the best method for analysing data from 10 countries, over ten years with ten variables?

I am undertaking my dissertation and I am analysing the effect FDI has on economic growth in Southeast Asian countries. I have data from ten variables for each country (10 in total) and have gathered ...
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23 views

Cross-sectional study design with no control group compares 2 treatment arms

There is a trend among medical research that assesses cross sectional (singular point in time) treatment comparisons between 2 treated groups in retrospective data. In other words the a person who ...
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Doing T-test across two data sets [closed]

So our paper is undergoing a second round of reviews and one of the reviewers asked the following question: "Add a t-test for wave 1 vs. wave 2. They won't be perfect, but if they are included as ...
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1answer
16 views

Study seems to show inconsistencies in study population

I'm currently reading this paper about the adherence of health check-ups in the korean population and try to make sense out of the given numbers. In particular I am confused about the adherence to ...
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1answer
89 views

Difference Score as Outcome Variable [duplicate]

I am trying to evaluate the effect of a certain policy on the achievement gains of students between two points in time. However, not all the students are exposed to this policy. I am supposed to use ...
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1answer
90 views

Diebold Mariano test for non time-series data

Can the Diebold Mariano test be used to compare the MSE of two models (trained on the same data) for non time series data?
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1answer
148 views

Pooled cross-sectional data or Fixed Effects?

Note: Apologies in advance for mistakes in terminology and understanding of the methods, I am a novice at this. I would like to compare the mental health of different groups of immigrants (by region-...
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27 views

Usefulness of decomposition of time series in a panel data regression analysis setting?

So, I am working with panel data. The different panels are for the different inverters that are present inside a solar plant. Each panel has variables that are time variant and are sampled at a 15 min ...
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11 views

Test for nonlinearity in cross-sectional time series data in R

I have a cross sectional time series dataset that looks like this: ...
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57 views

complex Difference-in-difference formula

I have 5-year sales information from a grocery store in Canada. I want to check whether an event that happened in 2017, affected the effect of the price of a product on its sales. For example, imagine ...
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1answer
16 views

Controlling for Exam Change in Regression Model?

I am analyzing exam data collected from participants who applied to an academic program. The data was collected from 2014-2018, and applicants only took the exam once when applying to the program (...
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271 views

Differences between time-series regression versus cross-sectional regression

I am currently trying to grasp the differences between time series regression and cross-sectional regression, because these terms are often used in papers about market predictability. I understand ...
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1answer
155 views

How can I control for unobserved heterogeneity with cross-sectional data?

I want to run a cross sectional regression for 700 firms in the US to test the impact of working capital on profitability. I specifically want to limit my analysis to the 2008 financial crisis and ...
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21 views

How to handle cross-sectional data in the long format? (Especially in R)

I'm conducting a study where my independent variables are mostly cross-sectional, but my dependent variable is longitudinal. Specifically, I'm looking at how the foundation characteristics of ...
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31 views

Hierarchical models and fixed effects

I'm trying to model some data using hierarchical models. I have the data at two levels, I have information for different firms in seven countries, $Y_{ij}$. So, the data is a firm-country level. I ...
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28 views

Which techniques can be used to explore causality in repeated cross-sectional data?

I have repeated cross-sectional data for certain variables during 51 years (hundreds of variables, measured every year). The number of samples (individuals) for which these variables are measured in ...
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1answer
52 views

Do we always need at least two time points in order to do a fixed effects model?

I have a question concerning fixed effects regression models. I have a cross-sectional data set which only accounts for one year (2017). I want to look at the effect of one individual factor (e.g., ...
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1answer
60 views

How many observations should a dummy variable encompass?

So I feel like this is a rather stupid question, but I can't find a straightforward explanation on the issue. When constructing a dichotomous dummy variable, how many observations should each category ...
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74 views

Creating a synthetic control with pooled cross-sectional data

Is there a way to create a synthetic control using pooled cross-sectional data, rather than a panel? I'm analyzing a staggered reform and, so far, the methods I've found require having a panel: Ben-...
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11 views

Accounting for connectedness during the analysis of nodes in a directed acyclcic graph

I am studying a river network and environmental features measured at different stations along the network. Often, one station is higher up the river than another (or multiple others). I can ...
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35 views

Comparing job satisfaction of part-time workers from two different industries

I would like to compare the job satisfaction of part-time workers in the health industry and the financial industry. Should I do a t-test? How can I do this with R. Can I use stargazer to get a table ...
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1answer
799 views

Fixed effects in a cross-sectional data set

I am conducting a research with a cross sectional data set (1 year, multiple countries). Now i am researching the likelihood of supportive leadership and firmsize. Now firm size is a catogorical ...
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21 views

Validity of applying cross-section analyses to balanced panel data

(I apologize if this question is off-topic.) I would like to apply a method developed for time-series cross-section data to a balanced panel dataset to estimate the effect of a treatment. What I mean ...
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138 views

Repeated cross-sectional data and propensity score matching/entropy balancing

I want to analyze the effects of a health care reform introduced in one region in 2009 on various outcomes using difference-in-difference (DID) analysis. I have access to repeated cross-sectional ...
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1answer
146 views

dummy variables and cross section data

I am building a linear regression model to analyze one cross-sectional dataset. In my dataset, there is one string variable called "firm_name", which includes 100 firms(name1, name2, name3......
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1answer
85 views

Calculating confidence interval for cross-sectional study with dichotomous variables

I am conducting an epidemiological study and will have results that tell me which proportion of my population will have immunity to a certain disease. The results here will be immune / not immune with ...
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62 views

Should I include country dummies when I combine datasets of 3 countries?

I am currently doing the analysis using firm-level data of three countries combining together. Also, it is a cross-sectional analysis. Therefore, in the Ordered Probit regression, I control for ...
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28 views

how to examine a relationship between categorical variables with several levels? [duplicate]

I would like examine if the job satisfaction of part-time workers is higher or lower compared to full-time workers. My dataset consists of 4125 cross-sectional observations. independent variable: ...
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394 views

Fama MacBeth vs. Pooled OLS

I have an unbalanced panel of monthly bond returns and would like to regress them on several possible return-drivers. There is cross-sectional correlation in the residuals. In this case, Peterson ...
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13 views

Compare ratings of players over different leagues?

I want to compare ratings of players from different leagues and predict rating of player in a league he/she didn't participate in. Rating of a player is estimated within a league where he was playing. ...
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1answer
32 views

What to do/tests to run when population size is unknown [closed]

Shall I stick to descriptive statistics? Everything I know about making inferences about a population seems pretty redundant. Feel free to roast me I'm working with some non-experimental cross-...
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1answer
40 views

Predicting house prices with machine learning. Problem with time-varying variables

I'm currently trying to cross-sectionally predict house prices using statistical learning methods. I have collected prices from 2009 until 2020. I have loads of time-invariant variables on the ...
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29 views

compare the means of two cross sectional time series

I have bi-variate annual ($n=6$) time series data for each company $i$ (number of companies $k=5$): $$\begin{bmatrix} X_{it} \\ Y_{it} \end{bmatrix} ,\, i = 1,\dots, k,\, t = 1,\dots, n$$ Where $...
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1answer
146 views

Proper Average Treatment Effect estimators (and standard errors) for Generalized Linear Models with log link?

What is the proper formula for estimating the Average Treatment Effect with a simple main effects generalized linear model? My first pass at defining the Average Treatment Effect for a GLM with a log ...
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1answer
371 views

Why does SUR improve efficiency of parameter estimation over OLS?

If residuals for the same observation from two 'seemingly unrelated' equations are correlated, then it is often stated that there are efficiency gains from estimating the parameters of the two ...