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# 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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### A Method for Functional Misspecification

I have been thinking about unbiasedness recently. An idea for came to my mind . Imagine that the dataset is separated into three different parts as training, the data that will be added to training ...
3 votes
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### Statistical test for independent and non-independent data together?

Aim I would like to compare the prevalence rates of some common mental disorders (CMD) between the findings of several authors (Studies 1 to 5). All of the studies are observational. Four of them are ...
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### Cross-sectional data in a DiD Design?

I am conducting a difference-in-differences Design (in R), however, not in the classical sense as I have two groups that were treated at the same time, but no control group. My groups are individuals ...
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### How should I test for parallel trend assumption in a repeated cross-sectional data?

I have a repeated cross-sectional dataset on time-use which I am using to estimate the impact of a certain shock. My outcome of interest is time spent by certain individual on particular activity. ...
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### How do I calculate a mediation model with 2 independent variables, 1 mediator and 2 outcome variables with R?

It is suggested that both independent variables could influence the mediator, which in turn could have an effect on both outcome variables (direct effects are also expected). All variables are on ...
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### Principal Component Analysis using Panel Data

I have a panel data with identifiers(a,b,c,....z) and different times(t=1,2,3,....100) I have 6 different variables (A,B,C,D,E,F) for every identifier-time observation. I attempt to use those 6 ...
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### Pooling survey years in random forests

I am currently trying to predict household wealth in a random forest, using survey data. My problem is the number of the observations. I have the option to either choose single years (n=4.000) or ...
3 votes
1 answer
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### Best Practices for Difference-in-Difference Analysis of Quasi-Experimental Repeated Cross-Sectional (Cat.) Data Different Samples per Neighborhood

I'm working with repeated cross-sectional data where each measure comes from a different sample of respondents per neighborhood. My study aims to evaluate the impact of varying police patrol levels (...
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### Panel Event Study

I want to perform a panel data event study using quarterly data. I have collected time series data on stock prices for approx. 1000 firms from 29 different industries over a 365 day period. My goal is ...
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### Difference-in-difference regression with pooled cross sectional data - fixed effects

I'm trying to estimate a difference-in-difference model with pooled cross-sectional data. The dataset consists of rental prices in one city for the years of 2011-2021 and includes a wide range of ...
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### Three level multilevel model in r

I am conducting an analysis looking at trust across a range of 30 countries between 2002-2018. I am using repeated cross sectional survey data. My data is structured so that individuals(level 1) are ...
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71 views

### Testing whether two percentage changes from different datasets are statistically significantly different

I have data on Male strength at 40 and 70 years, and equivalent data for Women. I can calculate the raw and % differences in strength for each sex, and of course compare the raw values to see which ...
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303 views

### Does directionality matter in regression for cross-sectional studies?

I am trying to see if slow walking is associated with certain brain regions. I think it makes most sense that brain atrophy leads to slow walking, so my model would be ...
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### Representative Observation and Random sampling

Suppose that we have a cross-sectional data set drawn by random sampling. Then, the data may represent our population of interests. We can consider two subpopulations: male group and female group. ...
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### How I can compare three models (nested) using lavaan with R?

I want to test a new model, and for doing this, as I only have cross sectional data, I need to compare different models. My model is like this: ...
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### Can enough cross-sectional data eventually substitute for longitudinal studies?

Imagine there is an injection being recommended, and it’s to lower your risk of getting a disease. The injection is new, meaning almost no time has passed to do a proper longitudinal study on its ...
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### Problem with weigts in survey analysis of GSS cross-sectional data

I have a dataset made from https://gss.norc.org/get-the-data There is a description from the codebook how to use weights: ...
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### Fixed effects in a cross-sectional data

I'm working with research that has cross-sectional data. I have collected information about publicly-listed banks in many countries. For example, for each bank I collected the following information: ...
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### PR estimation of a cross sectional study with a continuous variable possibly by Cox proportional hazard regression

I have a table of a simple cross sectional data: ...
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### Entropy balancing what are the gains in applying the technique?

I am developing a research that involves a model and when estimating it the coefficients were not significant. Because the hypotheses are strong, my advisor suspects that there is some problem in the ...
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### 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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### 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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### 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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