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0
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1answer
20 views

How to report results from eight paired t-tests in a scientific paper?

What would be the most efficient way to report test results from several paired t-tests in a scientific paper? If I gave a bar graph per test result (something like this) would it be too much? Should ...
0
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0answers
10 views

Comparing Overlapping Percentages

I observed how frequently participants exhibited five specific behaviors during testing. The total of the below percentages exceeds 100%, because some participants (30.43% of the sample) exhibited ...
2
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0answers
43 views

Reporting results of linear mixed-effects model

Linear mixed-effects models aren't commonly used in my corner of biology, and I need to report the statistical test I used in a paper I'm trying to write. I know that awareness of multilevel modeling ...
2
votes
2answers
78 views

Reporting regression statistics after logarithmic transformation

I'm a bit troubled about how to report linear regression statistics after log transformation of the dependent variable. I suppose I should report the transformed coefficient, but would they be easily ...
0
votes
1answer
20 views

Bootstrapped t test in SPSS: Why are some p value cells blank?

Using an independent samples t test, I am comparing the performance of 2 groups on an activity, based on the percentage of items correct (the percentage of total items correct, as well as percentage ...
0
votes
1answer
36 views

Is it worth reporting small fixed-effect $R^2$ (marginal $R^2$), large model $R^2$ (conditional $R^2$)?

In a mixed model analysis (lme4 + lmerTest for R), I want to analyse the effect of 3 predictors, say A, B and ...
1
vote
1answer
24 views

Reporting bootstrapped output for an independent samples t test

When reporting results of a bootstrapped independent samples t-test, can I just report the t statistic alongside the bootstrapped p value? Or do I also need to report confidence intervals?
4
votes
3answers
339 views

Variable is significant through stepwise regression but not in final model's summary; which should I report?

I used generalized linear mixed models (with the glmmADMB package) to identify environmental factors related to parasite abundance in rodents. I used stepwise ...
0
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0answers
8 views

How to analyse task repetition in a workflow system?

I have a system where the work flows through like so Open incident -> Find problem -> Validate -> Perform edit -> Sign off -> Complete Naturally this system can repeat at various stages. It's easy ...
3
votes
1answer
364 views

How do you report a Mann–Whitney test?

I am doing my dissertation, and I am conducting a number of tests. After using a Kruskal–Wallis test, I usually report the result like this: There is a significant difference ...
0
votes
1answer
55 views

Standardised or unstandardised?

I've been trying to teach myself some statistics (all social science-related) using SPSS. It's all going well so far, I'm amazed at how much I'm managing to understand given how terrible I am at ...
0
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0answers
39 views

How to report Stata random effects model

Can anyone tell me what is the best way to report the data from a re model? Should I just reproduce the whole table? Or should I pick out the relevant statistics? I can't find any info on this on ...
5
votes
4answers
170 views

How to report the ratio of two sets of experimental results?

I have measured the time taken to solve a problem by algorithm $X$ and by algorithm $Y$. It takes a quite long time, so I have only 10 data for each algorithm: $$ X : ( x_1, x_2, \dots , x_{10}) \\ Y ...
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0answers
105 views

How to report significance of factor levels shown in summary of glm?

The summary of my GLM shows day 12 of factor Date to be significant, but anova(model, test="Chisq") shows Date to be not significant overall. I know how to report the statistics from the Chisq table, ...
2
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0answers
41 views

Which of these two ways is better to report comparison of paired data?

Suppose I am comparing the computational time of two algorithms A and B. They are solving randomized problem P. Let's say I solved the problem for seeds $ 1, 2, \dots, n $ with both A and B and got ...
1
vote
1answer
83 views

Graphic representation of data

I conducted exploratory analysis of my data and got Mean and standard deviation values from the original data and plotted the data using boxplots. I conducted regression models (GLM and GLMM) on the ...
1
vote
1answer
908 views

How to report result from two-way repeated measures ANOVA?

I have conducted an empirical study as part of my master thesis. I have developed a software tool where cards can be sorted (affinity diagram) and in the study each test subject did a number of ...
5
votes
0answers
63 views

Words that estimate numerical proportions of a group

There seem to be more than a few papers that surround the use of certain words to define the probability of an event without actually using the numerical probability itself. For example, if you are ...
2
votes
2answers
65 views

Should the risk of Type II error associated with a n.s. factor be discussed if this factor significantly interacts with another factor?

When computing a 2(A)$\times$2(B)$\times$3(C) ANOVA, I observe that only factor A has a significant main effect. Factors B and C were not significant, yet display a moderate effect size and low power. ...
2
votes
1answer
46 views

Are these possible LeveneTest results?

I have experimental data of response times that differ according to the factor TrialType: Regular or ...
1
vote
0answers
18 views

Reporting percentages in preference type survey questions

I came a cross some survey results that show user preferences, asked in the form of the most and least preferred choices. The result reported was something like "x % of people chose option A as their ...
1
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0answers
538 views

Reporting predicted outcome of mixed effects models

I am analyzing some group-randomized longitudinal trial data with three time points using mixed effects model. Some people missed 1-2 time points, and I didn't exclude any cases with missing dependent ...
1
vote
1answer
79 views

Research paper - section dependent variable for logistic regression

In my paper, in the section methodology, I have a subsection called dependent variable. But since I am performing a logistic regression, there seem to be 2 (or even 3) things that could be named the ...
0
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0answers
1k views

How to report results from Friedman's test including post-hoc results

I have performed comparison of repeated measures for a group using Friedman’s test (K-related-samples test) and additional post-hoc analysis with Wilcoxon signed-rank test and Bonferroni correction. I ...
2
votes
3answers
632 views

Reporting interaction effect for a 2x3 ANOVA

I have used a 2x3 mixed between-within subjects ANOVA to assess the impact of three feedback conditions (Grade, Comment and No Feedback) on participants’ scores on the Specific-Self Efficacy Scale on ...
9
votes
3answers
1k views

Number of significant digits to report

Is there a more scientific way of determining the number of significant digits to report for a mean or a confidence interval in a situation which is fairly standard - e.g. first year class at college. ...
16
votes
4answers
434 views

Why don't we use significant digits?

Any idea why we don't use significant digits in statistics? Something along the line of we are using estimates so rules about precision don't apply ;) ?
0
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2answers
57 views

Are there any ways to glean useful analysis information from a comments field?

I have a dataset of data and two of the fields are user comments - (I did not design this form) I would like to know if there is anything I can do to get any information from a comments field - are ...
1
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2answers
489 views

Do I discuss the lack of interaction if I already discussed lack of main effects?

I conducted an experiment with 2 independent group variables (gender and language - language indicates either native speakers or 2nd language speakers) and ran a 2 way ANOVA. There were no main ...
2
votes
1answer
2k views

How to do ANOVA write-up when there is no significant effect at all?

I was conducting a 'recall of negative words' memory experiment with a two-way between-group ANOVA and got no significant main effects and no significant interaction! How can I go about explaining ...
4
votes
2answers
164 views

Book recommendations for biostatisticians in CRO and pharmacy

I would like to learn more about the work and statistical methods performed as biostatistician in pharmaceutical companies and clinical research organizations. It seems the book "Essential Medical ...
4
votes
1answer
667 views

How to report the results of Fisher's exact test for larger than 2 by 2 tables

What is an acceptable phrase for reporting a Fisher's exact test where the number of rows and the number of columns are both $>2$. An example in R: ...
5
votes
2answers
441 views

Is it necessary to report the bivariate correlations when reporting logistic regression?

I am writing up a logistic regression that looks at parenting factors (ie., parental depression, anxiety and stress) as predictors of the presence of a child anxiety disorder diagnosis. What is the ...
0
votes
2answers
149 views

Sharing of a trained SVM model

I have been asked by a journal reviewer to provide the my final trained SVM models so that others can try to replicate or make use of the models. Is there an accepted way to do this? I was thinking ...
4
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0answers
145 views

When can I leave counterbalancing factors (between participants) in an ANOVA out of a write up?

The following is a problem that I keep encountering in different forms. For now, I give one example, but I would also be interested in the answers to the more general question. I have a design with a ...
0
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2answers
529 views

Cox-regression model: question about acceptability, meaning, & reporting

Apologize for insufficient info in my previous version of this question. So, I am comparing patient survival in a retrospective study between two different groups, using SPSS. Now the difference came ...
5
votes
2answers
2k views

Do we need to report the median or the Mean when using a Kruskal-Wallis test?

I have two groups. There is a significant difference according to the KW test. But do I need to report the mean or median of the groups?
6
votes
1answer
157 views

Model selection in a paper: what to say about the dropped variables?

I have a question (simpler than my previous post today I hope!), which is probably very stupid as nobody has never asked it before. Lets say I am trying to explain the effect of 3 variables (A, B ...
3
votes
1answer
298 views

Alternative name for “incidence rate ratio”

I'm using a negative binomial GLM to predict individual level scores on a psychometric test that ranges from 0-27 and presenting the coefficient "incidence rate ratios". It seems a little strange to ...
2
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0answers
62 views

Estimating the reliability of a test section

Consider me a "naive researcher." We have a test of 25 items grouped into 5 item types. Each item is correct or incorrect. All items are math questions, but we expected 4 item types to have ...
1
vote
1answer
3k views

How to report two-way anova results?

After finding a significant treatment in two-way anova, how do I report where the differences are? Every text I have read has left me at: Ah, the results are significant, so let's move on. In one-way ...
1
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3answers
4k views

Reporting main effects and interaction from ANOVA

When reporting a two way 2 x 3 mixed ANOVA I have recently heard that the interaction effect should only be reported if the two main effects are significant (APA style). Is this correct?
2
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1answer
115 views

Reporting non-causal relationships

What is the appropriate way of reporting significant regression coefficients of a multiple regression when all variables have been obtained at the same measurement occasion? Specifically, do I imply a ...
6
votes
2answers
4k views

Reporting results of simple linear regression: what information to include?

I have just performed some (very) simple linear regression in Genstat and would like to include a succinct and meaningful summary of the output in my report. I'm not sure exactly what or how much of ...
4
votes
3answers
287 views

How to succinctly report the correlation between two variables for 20 different subsets of the data in a table?

I have 20 correlation coefficients (r) to report, for example, .34, .45, .67, .23. and so on. These are correlations between Variable A and Variable B, based on gender, age, education levels etc. I ...
3
votes
2answers
717 views

Is there a standard format for presenting a data analysis report based on a questionnaire?

I am doing some class work and I was wondering if there is a universally accepted format for analyzing and presenting the data in a Word document for data gathered from questionnaires.