Questions tagged [repeated-measures]
Repeated measures data occur when more than one measurement is collected on the same unit (e.g. subject). Use this tag for RM-ANOVA together with [anova] tag.
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Can I run mixed models in SPSS applying bootstrap (using "cluster bootsrap")?
I have utilized the ClusterBootstrap package in R to run bootstrap analysis for mixed models. Is this possible in SPSS? Using the BOOTSTRAP-command in SPSS combined with
/RANDOM=INTERCEPT | SUBJECT(...
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Permutation design for repeated measures via how() in RDA
We would like to properly set up the permutation design in anova() testing for our rda().
Study design
We chose several areas, ...
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One-way ANOVA on two factorial repeated measures design
I am reviewing the statistical analysis of "Debugging Tests for Model Explanations" in arXive.
In the paper, the authors have subjects looking at the output of 5 different ml models.
In each ...
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Using standard deviation or variance/precision as dependent variable in repeated measures ANOVA
Imagine an experiment with four different conditions in a 2x2 design. Each condition was tested using n trials (approximately equal across conditions). I summarized the continuous outcomes for each ...
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Ordinary ANOVA or Repeated Measurements ANOVA
My experiment consists in testing the effect of a compound on a cell line. I have 5 groups: control, concentration 1, 2, 3 and 4 of the compound. I performed three replicates of the experiment, each ...
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Repeated Measures ANOVA vs multiple Univariate ANOVAs
I have a dataset coming from a psychological experiment where each participant is rating faces of 5 different emotions presented randomly. So the emotion category is a within-subject variable and DV ...
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Testing and Incorporating Random Effects in Survival Regression
Below I have an example data set in which I'm modeling the time-to-event given two fixed-effect factors a and b, and a random-...
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G*Power - Difference between ANOVA Repeated measures, between factors and ANOVA: Repeated measures, within-between interaction
I have a mixed-ANOVA design: 2 groups (experimental & control) x 4 time points (pre, post, post2, post3), and am using G*Power to calculate the required sample size.
My understanding is that the &...
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Repeated measures exposures and outcomes in an intervention study
I have data from an intervention study and I would appreciate any help analyzing them. The intervention is the following: it's a cluster-randomized intervention with 200 people which ran for 12 months....
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Binary response outcome DV with two crossed repeated measure factors and one between subject factor. Should I use Generalized Linear Mixed Model?
I have a complex experimental design with two within-subject factors and one between-subject factor, where my outcome variable is measured on a binary response.
Country (Between-subject, 2 levels: A ...
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Bland-Altman with Repeated Measures
I am reviewing a paper where two different sensors which measure the same variable are being compared. Over the course of a year, each month a patient will wear both sensors for one week to gather ...
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RM ANOVA with a CONTINUOUS between subjects predictor
I'm conducting an experiment where I have 2 IV's on a DV. I used Repeated measures ANOVA on Jamovi to analyze my data but I have a question regarding a continuous between-subjects variable. I measured ...
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Covariate for two conditions within subject design
I am exploring the effect of being observed on a cognitive task. My specific hypothesis is that being observed increases stress and this increment in stress reduces performance in the cognitive task. ...
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How to combine within-subject score for between analysis when there is no within ID
I was task with analyzing some within/between-subject data, but my current guess is that I have no way of analyzing a combined within-subject score since an identifier/ID is missing. Is there a ...
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How do I modify logistic regression in my case (for repeated measures)?
I am a physician conducting some research in Critical Care patients (I have full ethical approval, none of my results will be used to inform patient treatment, etc).
When a person's lungs are ...
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Multiple paired t-tests or repeated measures ANOVA in one group?
I have read up on a number of threads discussing this, but none address my exact situation so I thought I would try my luck with outlining what I'm working with and getting more relevant insight.
I am ...
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Setting up a random effect for repeated measurement AND block and maybe an additional nested factor for a factorial binomial GLMM in R (glmmTMB)
It's about a logistic GLMM to account for repeated measurements, blocks (think about 'spatial' independent observations) and a nested factor. How should my random term look like??? Complex things need ...
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How to go about a regression analysis on a study design that is between and within subjects and has repeated measures?
I have 2 questions I'm trying to answer.
(1) w/in subject: How does a person's experience with (A) change overtime?
(2) btwn subjects: That person belongs to a certain group. How do groups' experience ...
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How to analysis the potential correlation for two different variables at multi-time-point?
We plan to conduct a study about a heart congenital disease. All of the patients have received the same surgical procedure.
Everyone was received the ultrasound detection at 3 days preoperative, 7 ...
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How can I transform my data to achieve homogeneity for a factorial mixed ANOVA?
I'm fairly new to statistics (I'm doing it for my bachelor thesis). I want to do a factorial mixed ANOVA in Jamovi, but not all of my data is homogenous (15 out of 126 measurements are not homogenous)....
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HI ANOVA vs Regression
I am conducting a repeated measures study and comparing two experimental conditions and the control to see if they still will have an effect.
I hypothesize that VR environment will impact memory ...
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Calculating correlation coefficents between two variables at different time points
I have 2 continuous variables that are measured at 3 time points in a within-person repeated measures fashion (T1, T2, T3). The variables follow a non-normal distribution (N = 42).
I would like to ...
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Repeated measurement
I need help to choose the right statistical analysis for a project.
I have subject that undergo repeated measurement
Sample size 8 (but will be larger). All measurements are conducted within 20 min ...
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Is mixed ANOVA the correct test for my experiment?
I'm new to statistics and maybe I went a little bit other my head for the experiment design of my bachelor thesis:
I measured the turn angle of people dodging different objects in virtual reality. The ...
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Phonological errors in children
I have a data (ge3_ratio) with 86 observations measuring the ratio of phonological errors produced by children. The data was collected from spontaneous speech transcripts from 3 children aged 21 to 65 ...
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Help with choosing a statistical test: Possible repeated-measures ANOVA?
Apologies if this is a simple question; my knowledge is limited to a single introductory stats unit.
My design has two independent groups: test group vs control group. Both will be presented with ...
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Which standard deviation should I use to calculate standardised mean difference from mmrm mean difference?
I have data of an RCT study. It is a two arm study with 3 post-baseline time points. Based on the study design and study objectives, I have ran a MMRM on a continuous outcome variables. The model ...
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Estimating and comparing treatment effects with participants that have repeated measurments
Suppose we run an experiment with 50 participants. We take repeated measurements from each participant: each undergoes three different treatments during which we measure their reactions (our ...
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Testing for treatment differences in a problem involving repeated measures
I am having trouble choosing the right statistical test for my data analysis.
Every patient undergoes a stress condition and other five normal conditions. For each patient and for each condition I ...
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which LME model to use?
I am interested in learning whether a diet can help people lose weight. I randomly assigned participants to receive the new diet. Weight was monitored at baseline and again at the beginning of every ...
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Repeat measures for predictor, still okay for mixed-level modeling?
If a response has repeat measures, modeling it with a mixed-level model is straightforward, but what if it's the presumed predictor that has repeat measures?
For example, in a sample of brains, each ...
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Mixed model with multiple assessments for each subject that are of no interest
I have a dataframe with with a variable group that denotes three different subject grouops ('HC','MDD','SZ'). My main interest is to find out how the three groups ...
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Comparing independent variables between 2 disease states in N people?
I am aiming to discover blood serum markers that are associated with a specific disease state. I have a sample of N individuals, all of which have active disease at the start of the study, for which ...
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Controlling for individual differences in a repeated-measures design?
I have been analysing a study where around 500 participants each were given a survey, so there were repeated measurements of each participant. Participants were male and female uni students who were ...
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Random and fixed effects for count data when repeated measure subject is point of interest
I'm having trouble understanding how I build a model to help me find out whether there are differences between referees and the personal penalties (temporary suspensions from the game) they give out ...
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How we do the Mixed ANOVA post comparison
I am learning and doing the Mixed ANOVA using Python pingouin under a clinical example dataset that contains one between factor (drug: A, B, C) and one within factor (Time: T0, T1, T2, T3, T4) from 5 ...
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Longitudinal data with nonrandom missing values
I'm working on experiment where two types of terminally ill mice are treated with two different drugs. Then physiological measurements are taken in four time points. Due to the disease some mice ...
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Can I run multilevel mediation analyses with only two measurement occasions?
I have recently conducted a project which aims to examine whether Treatment (X) affected Anger (Y) via Heart Rate (M).
Treatment was a between-subjects predictor with two levels, treatment 1 vs. ...
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solving for standard deviation of a difference from an F-test
In an old article (1990s), results are reported where 30 subjects respond to two kinds of words and reaction time in milliseconds (ms) is measured for every response. In an repeated measures analysis ...
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Controlling for within-subject variance in planned contrasts (lm model)
Somebody asked me about doing planned contrasts with repeated measures (within-subject design). I normally use contrasts with the lm function in R and have no ...
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Different results with different methods of conducting RM ANOVA in R
I have a repeated measures design, one continious outcome "E_R", two categorical predictors "S" and "I". In my design, every participant has been exposed to every level ...
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Can be Rubin's pooling method (multiple imputation) be combined with Kenward-Roger or Satterthwaite degrees of freedom?
I would like to use multiple imputation algorithm with a Generalized Least Square with Kenward-Roger or Satterthwaite degrees of freedom. Does the commonly implemented Rubin's method account for those ...
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GEE results showing opposite of true marginal relationship with EXCH working correlation
I am working on a modelling issue with two main effect variables: time period and Setting, related to an outcome, with all 3 being binary. My PI wants to test for moderating effects, so we have an ...
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Which statistical test is more appropriate?
I have collected data for an experimental study from 88 participants. Specifically, all participants received both interventions but in a different order. 44 participants received firstly Treatment A ...
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Can lme4 fit a repeated measures model with unstructured covariance? How does it differ from fitting using gls in nlme?
I recently read this paper by Donohue et al. in Pharmaceutical Statistics (Open access: https://doi.org/10.1002/pst.2285). Mixed model repeated measure (MMRM) analyses are discussed. In particular, ...
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Can paired t-test be used when data comes from different task conditions at a single time point?
In my experiment a single group of participants performed a cognitive task with two interleaved types of blocks (A and B). Blocks A and B differed in terms of the type of stimuli used but were ...
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Repeated measure design with missing values
I have data from a repeated measure design, as follow:
Each subject is measured under 10 differente experimental conditions
For each experimental conditions, 2 physiological caractéristics are ...
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lme4 subject-level random effect for repeated measures but subjects belong to two different groups reflecting fixed effect
I am analyzing effects for two different populations ('group membership') where each subject provided repeated measures. I would like to have the subject as a random effect given repeated measures, ...
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How to run a Mixed Effects Logistic Regression Models for Longitudinal Binary Response Data in R?
I want to identify risk factors for certain disease. The binary dependent variable (outcome) is collected over 4 different time points (T1, T2, T3, and T4), indicating whether the patient has the ...
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What would be the most appropriate analysis to compare repeated measures, multiple proportions of 100% across time?
Let's say you have a person who wishes to increase their running endurance. They complete three runs, where the proportion of time (as a %) they are running, walking, and resting are logged. Is there ...
