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Questions tagged [cochran-mantel-haenszel]

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Cochran-Mantel-Haenszel Test confidence interval

I'm looking at a collection of very similar dichotomous outcome studies, and in order to assess the relative risk of an intervention and account for study variability, I believe I should use the ...
DRG's user avatar
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1 vote
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229 views

One-Sided Alternative Hypothesis in a Cochran-Mantel-Haenszel (CMH) Test

"A novel treatment is being developed and to measure its efficacy, the proportion $P_1$ of treated subjects who benefit from a certain Positive Outcome will be compared against the proportion $...
Federico's user avatar
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469 views

Compare two groups in Cox Proportional Hazards model

I have a Cox Proportional Hazards model and I'd like to check if there are statistically significant differences between ECOG groups 1 and 2 (HR: 1.32 vs HR: 2.19). I have thought of doing a paired t-...
adrian1121's user avatar
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376 views

Chi-square test for 3 dimensions: Cochran–Mantel–Haenszel Test post-hoc interpretation

From food microbiological data, I have the following variables (showing only the head): $$ \begin{array}{|c|c|c|} \hline \text{TYPE} & \text{YEAR} & \text{Escherichiacoli} \\ \hline \...
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stratified analysis - Mantel Haenszel?

I am trying to solve a problem about a case-control study, where I need to calculate the odds ratio the association of X and Y, stratified by two age groups. First, I calculated the crude OR for each ...
COCONUT's user avatar
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1 vote
1 answer
791 views

Which test statistic to use: Cochran or Mantel Haenszel?

The SPSS output for the CMH procedure reports both the Cochran Mantel-Haenszel test statistic. What considerations should go into choosing one or the other test statistic? (In my data set, one is ...
Joel W.'s user avatar
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1 answer
848 views

Cochran Mantel Haenszel vs. Breslow-Day - what's the relationship?

I was told, that the Breslow-Day tests the assumption on homogeneity for the CMH, the same way we check homogeneity of variances in ANOVA (to focus only on the means, not being "confounded" ...
bijousweet's user avatar
2 votes
2 answers
409 views

Can I apply a Cochran-Armitage test (chi-squared linear trend test) to compare two categories of data?

I have a problem where I am trying to determine whether there is statistical significance from two groups of data. I have two columns which show the frequency of visits to their personal trainer based ...
Ze0ruso's user avatar
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1 answer
158 views

Test for pre-post test binary data for 3 groups

I want to confirm what test to use for my data. I have three intervention groups. With the presence of a certain pathogen 1/0 (yes/no) before and after treatment. I want to analyze if there is a ...
jfish's user avatar
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3 votes
1 answer
976 views

Power analysis for relative risk equivalent to power analysis for difference between two proportions?

I need to make a power analysis calculation to estimate the minimum sample size for a relative risk statistic (ratio of two proportions) for unmatched data - two independent samples. Can I use the ...
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Violating Cochran-Mantel-Haenszel assumption and alternative

I have student grade data (A, B, C, D, F) before and after a new course was introduced. I'd like to investigate if there are differences in the fractions of students scoring each of these grades. In R,...
kozina-adjacent's user avatar
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1 answer
88 views

Is there a need to account for confounders if crude association is not significant?

Background: Swallowing exercises are prescribed to head and neck cancer patients during radiotherapy to prevent swallowing impairment Aim: Determine impact of swallowing exercise compliance on ...
user224743's user avatar
1 vote
0 answers
589 views

When is "Cochran–Mantel–Haenszel" like "McNemar's test"?

In Wikipedia, the article on Cochran–Mantel–Haenszel statistics states that "The McNemar test can only handle pairs. The CMH test is a generalization of the McNemar test as their test statistics ...
Tal Galili's user avatar
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is mcnemar's test suitable to evaluate the differences of the proportions of events between the subgroups of risk scores?

the authors indicated that comparing event frequencies of events between subgroups( example frs and df) of groups ( low intermediate high) mcnemar's test was used. is it right for this study design?
macstatistics's user avatar
1 vote
1 answer
611 views

Cochran-Mantel-Haenszel test on tables larger than 2x2

I'm studying use cases for Cochran-Mantel-Haenszel (CMH) test. All the examples i've found deal with 2X2 contingency tables. I'm wondering if ...
Denis's user avatar
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2 answers
2k views

Cochran-Mantel-Haenszel test versus multiple Chi-square tests

Recently i've learned about Cochran-Mantel-Haenszel (CMH) test and its application for data analysis. I'm wondering why i have to perform a single ...
Denis's user avatar
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Test of a binary endpoint in longitudinal design

Suppose I conduct a randomized, double-blind, placebo-controlled trial. I follow-up patients at weeks 4, 8, and 12. My primary endpoint is "treatment response" by week 12. In this case, even ...
AdamO's user avatar
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Mantel's test with non-symmetrical data

I am struggling with a Mantel's test and I could use some advice. I have worked with ade4 and vegan packages in R but I have had to trim down my data so that it is symmetrical and change it to a ...
Ganges Lim's user avatar
4 votes
1 answer
1k views

Analysis 2x2x2 contingency table

I want to analyze whether the association between Variable A (expected value of two different options: high vs. low) and Variable B (choice proportions for each option) differs between the two levels ...
Lafayote's user avatar
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Mantel-Haenzsel Test and Fisher’s Exact Test

I am testing independence for two binary variables in the presence of a third categorical variable. I initially used Cochran-Mantel-Haenszel Test. However, the test requires all the associations for ...
SuperSaiyan's user avatar
2 votes
1 answer
2k views

Why does SAS Cochran-Mantel-Haenszel seems different than others?

I've been asked to compute a Cochran-Mantel-Haenszel (CMH) Test on 2 variables : one is an ordered factor from quantiles of a numeric value ("Q1", "Q2", "Q3", "Q4") the other is an unordered ...
Dan Chaltiel's user avatar
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4 votes
2 answers
4k views

Controlling for a third variable in chi-squared analysis

I have $n$ individuals belonging to five different groups. I would like to know if those groups have a significant impact on a certain factor $Y$ (having three possible levels, A, B and C). So, I am ...
Leandro T.'s user avatar
1 vote
0 answers
115 views

what is the Wilcoxon-Mantel-Haenszel?

I want to know that difference of between Wilcoxon-Mantel-Haenszel and Cochran-Mantel-Haenszel method in Shift analysis.
HJH's user avatar
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3 votes
1 answer
858 views

Contradicting p-value and confidence interval in the Mantel-Haenzsel Test [R-Code]

This is a part of the appendix to a past paper I have but it is just essentially R-Code. For the Mantel-Haenszel test, the p-value is greater than 5% so I would Fail To Reject the null hypothesis ...
StephanCasey's user avatar
2 votes
1 answer
1k views

Logistic Regression for 2x2xK data

I am very familiar with logistic regression. I have used logistic regression with data sets in which each set up independent variables has a binary (1 or 0) dependent variable. However, I have found ...
a.powell's user avatar
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1 vote
1 answer
981 views

Stratified Analysis + Multiple Testing

I found this article, describing a systematic approach to stratified analysis: https://www.linkedin.com/pulse/conducting-stratified-analysis-test-confounding-navneet-dhand Test crude association ...
kiitr's user avatar
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5 votes
2 answers
2k views

Random Effects for Mantel Haenszel

I'm familiar with the standard Mantel Haenszel method for Odds ratios and Risk ratios. Is there also a random effects method? If so, can anyone provide the formulae and/or citations?
user151752's user avatar
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0 answers
75 views

Inflated Estimates in Generalized Linear Mixed Models

I have data containing 40,000 observations, coming from around 30,000 subjects. Most subjects contribute one observation, some contribute two. The dependent variable is binary (1/0), and let's say, ...
user3275222's user avatar
1 vote
0 answers
132 views

Measuring magnitude of variation between 2 one-phase association exponential curves

I am currently testing the independence of two unpaired conditions A and B; with each condition representing a set of 12 values (aka bins) that compose a one-phase association exponential curve. Each ...
user3242289's user avatar
4 votes
1 answer
4k views

logistic regression or mantel-haenszel?

For a 2x2xk table, where k are strata from repeated cross-sectional studies over the course of 10 years, would it be suitable with a Mantel-Haenszel test of common odds ratio or would a logistic ...
schvost's user avatar
  • 141
1 vote
0 answers
60 views

Computational singularity error when running partial mantel test in R

I've been running a series of partial mantel tests in R using the 'ecodist' package. Each test represents a different distance hypothesis relating genetic distance to cost distance to travel through ...
Helen's user avatar
  • 11
1 vote
1 answer
54 views

Mantel test permuting values instead of rows?

I mistakenly did a Mantel test by permuting the values in a dissimilarity matrix, instead of the rows of the dissimilarity matrix. I've realized that this is not the Mantel test, but I don't ...
smccain's user avatar
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4 votes
1 answer
6k views

Question on SPSS Mantel-Haenzsel conditional independence output

SPSS provides these three statistics as output for the crosstabs command STATISTICS=CMH(1): Tests of Homogeneity of the Odds Ratio Tests of Conditional Independence Mantel-Haenszel Common Odds Ratio ...
Joel W.'s user avatar
  • 3,396
3 votes
1 answer
347 views

Partial correlations among three distance matrices

I am trying to test the hypothesis that related species should deviate more in niche space the more they overlap in geographic space. In other words, related species either forage similarly and don't ...
forlooper's user avatar
1 vote
1 answer
138 views

Using Mantel to explore relationship between geographic distance and a multivariate character

I'm working with bird songs. A song is composed of many vocal parameters [highest frequency (Hz), lower frequency(Hz), bandwidth(Hz), duration (s), number of notes, and son on....] I'm interested in ...
Mohr's user avatar
  • 45
1 vote
1 answer
1k views

Mantel Test data assumptions

Does the Mantel Test works with non-normal distributed samples? I couldn't find anything clear enough about it.
Mohr's user avatar
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