The case-control-study tag has no wiki summary.
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What is the difference between a frequentist approach with meta-analysis and a Bayesian approach?
Say I am performing an analysis looking at a particular health measure. I am interested in the difference in that measure between patients and controls and wether or not the difference is different ...
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18 views
Why does increasing event weight in logistic regression increase c-statistic?
I have a logistic regression model that uses all events and a sample of non-events as the training and test population. The observation weights are chosen following King & Zeng. Events are ...
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1answer
41 views
Is this a case control study or a retrospective cohort study?
From the echocardiography database at a tertiary care center, 1,625 subjects (mean age, 44 6 14 years; 47% men) with normal echocardiographic findings between 2000 and 2009 were identified. Gender ...
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40 views
Does case control ratio matter in Cox regression?
I am trying a Cox regression model to do survival analysis/hazard ratio of developing diabetes. But my case control ratio is like 9:1 (i.e. 900 cases and and 100 controls). Will this big difference in ...
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1answer
39 views
Case Control Study
Suppose we have identified $20$ cases from a population of $1000$ people. $15$ of these cases are male. We want to use one-to-one matching to choose the control group. We would match on gender. So ...
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150 views
Using lme4 for case-controlled logistic regression?
I would like to use lmer for a conditional (or case-controlled or matched pairs) mixed effects logistic regression. However, I am not aware of any published use of ...
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1answer
53 views
Dividing controls between two groups of cases
I have a set of data that contains cases and controls. I would like to divide the cases by a particular phenotype before running my tests, to see how these groups differ (but not necessarily to ...
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23 views
Are case-control studies one example of an extreme group design?
I need to present some research to a field that commonly uses case-control studies (comparing those with a disease versus those without) and it just occured to me that an extreme group design (which I ...
3
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1answer
49 views
Sources for sampling in case-control studies
In my previous job as a statistics teacher, I was involved in studies mostly as an advisor on a general level. Not that much hands-on experience from doing the actual sampling or data cleaning, ...
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139 views
Determining whether two samples come from the same population and which hypothesis test is appropriate
I have a study conducted by a team of doctors: two groups of people were treated for stress urinary incontinence in two ways: TVT and abbrevo. Each group consisted of 23 people. The hypothesis is as ...
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63 views
Can I validly expand the odds ratio analogously to the relationship between relative risk & the incidence rate ratio?
I am involved in a nested Case-Control study that involves cohorts of cases and controls entering a program, with the outcome of failure by six months. Cases and controls are individually matched on ...
4
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1answer
184 views
Follow-up updates in case-cohort designs
In a case cohort, you randomly sub-sample some feasible number of the cohort (say 20%) and then afterwards add all of the cases that were not part of the sub-sampling. So while a case-cohort is easy ...
4
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2answers
348 views
Optimal case/control ratio in a case-control study
What is the optimal case/control ratio in a case-control study? Why do most textbooks or monographs suggest that it is more than 1? Can it be less than 1 (what are the drawbacks?)? Thank you.
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197 views
Using controls as basis for quantile/tertile categorization
I have a number of continuous but really skewed variables in the statistical analyses I am currently performing. Even though I am strongly in favour of keeping them just as they are and relaxing ...
1
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1answer
54 views
Measuring tariff evasion before and after tariff cut
I have data on tariff rates and a proxy for tariff evasion (that is common in the literature). The data spans a couple of years before the country I'm studying implements a tariff reform and lowers ...
2
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1answer
148 views
Imputing/instrumenting for missing variables in a case-control study
I'm combining two surveys in a case-control design. Survey B is drawn from the "case" population, and includes all the variables I need for analysis, plus some extras. Survey A samples a general ...
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2answers
116 views
Probabilities in case-controlled studies
I have a nested-case control study that I have been using for analysis. At the end of my work I have deduced a set of variables that I use later to to classify new cases. One example of a simple ...
3
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2answers
211 views
Review of case control matching algorithms?
Can you suggest a good review of case control matching algorithms? Algorithms that can be used to set up the matched pairs of one case and one control, or matched blocks of a case and multiple ...
3
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1answer
592 views
What does “case-control” and “cross-sectional” mean in the context of logistic modeling?
While studying logistic modeling, I read the following statement
The fact that only odds ratios, not individual risks, can be estimated from logistic
modeling in case-control or ...
