Questions tagged [ordinal-data]
Data with categorical values that can be ordered by magnitude, but the exact distance (spacing) between categories is undefined or unknown.
1,224 questions
4 votes
3 answers
185 views
Is Bayesian ordinal logistic regression (OLR) a better choice than conventional OLR when certain cells have a small number of observations (<10)?
The outcome variable of my study is the level of knowledge of tobacco cessation services, with three categories: no, low, and moderate/high. The sample size is 660, but some predictors have cell ...
0 votes
1 answer
57 views
Using ordinal logistic regression to extract insights with imbalanced data
I am attempting to understand how each independent variable effects the probability of each dependent variable, which are ordinal (0, 1 and 2). Therefore, I am attempting to use ordinal logistic ...
- 11
3 votes
1 answer
106 views
Frequentist alternatives to brms for mediation analysis with ordinal outcomes
I'm interested in conducting a mediation analysis with ordinal outcomes, and have not been able to find too many resources. I apologize if I've missed any. My model contains: X --> M --> Y where ...
- 159
2 votes
1 answer
314 views
Why are ordinal variable levels not kept in order in glm?
I've been following the method illustrated here: Polynomial contrasts for regression to transform the results .L, .Q, .C, etc. of a glm ordinal factor regression in the values for each of the levels ...
- 45
1 vote
2 answers
41 views
Ordinal response, two groups, repeated measures
I have an ordinal dependent variable and a dichotomous independent variable (group: A or B). The response has 4 levels and is measured multiple times on the same subjects. Data looks like this: ...
- 2,201
2 votes
1 answer
55 views
Test of independence between two ordinal variables with repeated measures
I have two ordinal variables: $Y$ and $X$. Variable $Y$ has 4 levels, variable $X$ has 3 levels. These variables are measured multiple times on the same subjects. Data looks like this: subject Y X ...
- 2,201
4 votes
1 answer
101 views
What to include as random effects?
I’m analyzing data from a 3×2×2 within-subjects factorial design, where each participant responds to all 12 vignettes. The dependent variable is a Rating on a 7-point-likert-scale. I’m planning to use ...
- 41
3 votes
1 answer
94 views
Nonparametric test to compare deviation from a constant in a clinical trial
Following up on a previous question, thank you for your great suggestions! First the initial problem, than two curveballs for the wicked. We are currently designing a two-arm randomized clinical trial ...
- 163
4 votes
0 answers
107 views
Transform and analyze bipolar / bidirectional ordinal scale to use as primary outcome in a clinical trial?
We are running an observational clinical study on sedation during painful procedures and planning a future randomized trial. The primary outcome variable is a 6-level ordinal scale characterizing ...
- 163
1 vote
1 answer
59 views
Mixture-Based Clustering for Ordered Stereotype Model - Distance Scores
I have a 5-variable/3 category-level ordinal survey data set. E.g. 5 health variables ranked 1-3 (good-moderate-poor). I want to row-cluster different responses. But also, I want determine whether ...
- 264
4 votes
1 answer
64 views
Seeking Advice: Analysis Strategy for a 2x2 Factorial Vignette Study (Ordinal DVs, Violated Parametric Assumptions)
I am seeking guidance on the most appropriate statistical methodology for analyzing data from my research investigating public stigma towards comorbid health conditions (epilepsy and depression). I ...
4 votes
1 answer
159 views
Markov ordinal longitudinal model or discrete time multistate model for analysing recurrent event
Inspired by this discussion (Martingale and Deviance residuals in parametric recurrent event analysis?), I would like to extend it a bit for collecting more ideas and tips. To be clear, my questions ...
- 51
0 votes
0 answers
17 views
How to treat ordinal predictors in the context of multiple linear regression [duplicate]
I have a question regarding an analysis I’m trying to do right now concerning data of 100 patients. I have a transformed normally distrubuted continuous outcome Y. My predictor X is 12-scale ordinal ...
- 1
11 votes
2 answers
623 views
Huge Difference in Interaction P-values Between Linear vs. Ordinal Regression (0.991 vs. 0.001)
I have an experiment with two independent variables and one dependent variable: Independent variable 1: Discrete, range 2-150 Independent variable 2: Continuous, range 0-1 Dependent variable: ...
- 111
3 votes
1 answer
117 views
Ordinal item should be regressed as such using ordered regression. But how can ordinal scales be treated using ordered regression?
Many fields use questionnaires that ask questions with ordered answer options. For instance, a question might be I have a good self-esteem, with response options ranging from Fully disagree; Disagree; ...
- 160