IBM SPSS Statistics (formerly SPSS, i.e. "Statistical Package for the Social Sciences") is a proprietary cross-platform general-purpose statistical software package. [For SPSS Modeler, use 'spss-modeler' tag.]

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Which statistical test should I use for my research proposal?

I am testing the effects of traditional mental health counseling versus culture specific counseling. Therefore, there will be two groups: one group that receives culture specific treatment and one ...
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30 views

In a linear mixed model what does the F value represent?

I am examining the output of my linear mixed model in SPSS and need to decide how to report my findings. I was considering just reporting the p-values. However, my supervisor wants me to provide more ...
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30 views

How to structure dataset and write syntax for mediation model with clustered data?

I have a dataset of 300+ students with teacher-reported data. There are 17 total teachers that reported data on the students. I would like to run a model that tests mediation where the mediator is a ...
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2answers
444 views

Friedman's test is very significant, but its post-hoc comparisons (SPSS) are not significant

I ran non-parametric Friedman's test for my data in the SPSS 22 and significantly rejected the null. That would mean that among the $k$ paired samples (3 in my case) there should be detected at least ...
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1answer
28 views

Which number should I use for In-between group analysis by using Fisher's exact test?

I have to find out if the baseline demographics have statistically significant difference between two groups. The project is about two groups of students, one intervention group and one control group. ...
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18 views

Which number should I use for In-between group analysis by using Fisher's exact test?

I have an assignment to find out if the baseline demographics have statistically significant difference between two groups. The project is about two groups of students, one intervention group and one ...
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14 views

Analysis of data with three categorical IVs, continuous moderator and continous DV

I just performed a 2x2x2 between-subjects experiment with continuous DVs. Due to the fact that the factors are categorical and the DV continuous, I believe that GLM might be best suited. However, as I ...
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8 views

Predictive measure of association in CART

In the article http://www.gad-allah.com/MBA%202010%20Ain%20Shames%20Univesity/Statistics/spss13/Algorithms/TREE-CART.pdf in p. Surrogate Split there is a formula for Predictive measure of association. ...
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26 views

Categorical dependent variable - multilevel modelling using SPSS

is it alright to run a multilevel model using a binary categorical dependent variable (0,1). The model is running fine, but is there a better way to deal with it? Many thanks!
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13 views

Conjoint analysis varying card responses

I conducted an online survey during a conjoint analysis. The task of the particpants was to rank several stimuli cards with a 6 point likerttype scale from not trustworty (score 1) to very trustworthy ...
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1answer
32 views

how to recode a “slider” question into a Likert scale in SPSS?

I have a battery of questions for which I used a "slider" option in Qualtrics (respondents can just drag a slider along a continuum to mark their answer), from 0 to 100. My problem is that I'd like ...
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27 views

Univariate Cox Regression with categorical variable in SPSS

I am running a univariate Cox regression on a set of patients. The variable Riskgroup is grouping patients in 4 groups. My code looks like this: ...
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14 views

Using Multinomial Logistic equation for outcome variable. Need help with SPSS

My outcome variable: How wise is it to attend college taking student loans: Options are 5 categories Very wise to Unwise. However, I'll treat them as nominals with 3 options Wise, Neutral and Unwise. ...
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1answer
46 views

Interpreting hierachchical cluster output

This is a dendrogram resulting from a hierarchical clustering using SPSS. I thought the clustering is done in the following way. I would like to know if the way I am interpreting is correct. ...
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1answer
10 views

Comparing the proportion of men accessing a service to the proportion of men in the local population

I am looking at whether men access a service proportionally. My data is nominal and consists of men accessing a service (3000), woman accessing the service (6000), men in the local population (99300) ...
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2answers
36 views

Detecting change in % responding to a question over time periods

A study has been asking the same ratings questions repeatedly year over year. Currently, the study is using a Column Means test in IBM SPSS Survey Reporter to compare the number of people responding ...
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14 views

Correlation between scale and nominal data in healthcare statistics [duplicate]

I'm a physiotherapy student looking for help with a project. Any help would be appreciated. Even signposting to some relevant resources would be great. Basically I have; A group of patients (n=90). ...
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12 views

Comparing SPSS regression to WEKA model outputs?

I am attempting some regression techniques using SPSS and weka In SPSS I can get the R R^2 Adjusted R^2 Std. Error of the Estimate. Weka outputs: Correlation coefficient Mean absolute error ...
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15 views

What specific Reliability measure can be used in SPSS when multiple scales are used?

I have a survey of 360 individuals. I asked them questions with different types of answers (scales). I have few questions with Yes/No, few questions with multi-categorical answers (types of ...
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1answer
38 views

Changing values of string variable with an if clause in SPSS [closed]

I have a dataset that looks like the one below. I will need to use both ID1 and ID2 to identify each row. The responses in the OpenText vary greatly. ...
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93 views

How to get standard deviation from estimated marginal means (lsmeans)?

I am trying to calculate adjusted means and standard deviation across groups of people according to age. Using SPSS, I use general linear model -> univariate, then calculate the means adjusting for ...
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18 views

Nonparameric mixed (split-plot) anova in SPSS?

All, I have a 4-within x 2-between split-plot (i.e., mixed ANOVA) design with data that are not normally distributed. The DV resembles count data, with mostly zeros and decreasing numbers of 1s, 2s, ...
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18 views

Comparing two independent variables using SPSS

How can I compare two independent groups using variables like weight, height, bmi and stratify them using age group at the same time? The table below depicts how the analysis will look like.
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28 views

Mediation Analysis using PROCESS by Dr. Hayes

I have one one concern regarding the range of confidence interval when I do a mediation analysis using PROCESS model 4 by Dr. Hayes. The result of the mediation analysis indicated that indirect ...
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35 views

Replicating or Approximating SPSS syntax for a longitudinal mixed model example in R

Could someone show how the following SPSS syntax for a longitudinal mixed model specification could be replicated (or approximated) in R? My dataset is "mydata." ...
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1answer
112 views

How to obtain the same varimax-rotated PCA results in MATLAB and SPSS?

I'm trying to perform a PCA Extraction + Varimax Rotation in MATLAB and obtain the same results as in SPSS. My data is the following matrix A: ...
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106 views

A categorical PCA (CATPCA) question

I have a dataset that I am analysing using CATPCA in SPSS. The problem that I have is that while I can see the variables that are positively or negatively correlated on the Component Loadings table ...
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34 views

Correspondence Analysis - Marketing - Respondent Ideal Points

How would you show respondent ideal points for a related question in the same survey? Specifically, how would you chart each respondents' ideal attribute groupings along the same dimensions created ...
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78 views

How to graph continuous independent variable and logit of dichotomous outcome in SPSS

First question: I am using SPSS, and I want to graph the logit of my dependent variable on the y axis and my continuous independent variable on the x-axis. I am interested in visualizing the ...
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1answer
549 views

How can I calculate the AUC of combined variables using SPSS

thank you for taking time out to read this. I have previously ran ROC curves to get the AUCs for single test variables but I do not know how to derive the AUC for combined variables (2 test ...
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1answer
50 views

What statistical analysis is appropriate for a before and after design (where participants are not necessarily the same people)

I am trying to figure out what is the best statistical analysis for my data. I looked at two companies in timepoint 1 (baseline) and timepoint 2. Company A did an intervention, Company B did not ...
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49 views

Likert scale in SPSS analysis

my study hypothesis is that patients perceive their antiretrovirals treatment differently as opposed to their cotreatments and have better adherence to their antiretrovirals than to their ...
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14 views

Interaction within my dependant variable

So my regression model is ideal within my scenario of evaluating CSR disclosure and assurance, as both seperately are significant using OLS and logistic regression. The key issue is I want to have an ...
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2answers
43 views

Should I use logistic mixed effects? How?

I've run an experiment in which different subjects had to make a number of decisions, which are stored in the dependent boolean variable Y (0 or 1). I have multiple independed variables which may ...
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1answer
106 views

How to test for a statistically significant difference between 3 percentages?

I have samples of stories from three newspapers, all testing for the same proportion of stories with a certain characteristic. The data I have is: np1=16.34%, np2=14.00%, np3=18.29%. I want to ...
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1answer
46 views

Different output for cox regression in R vs SPSS

During my analysis that I perform with a collaborator we get consistently different ouputs in cox regression between R and SPSS. Betas and p-values differ minutely, usually somewhere in the third or ...
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25 views

Problems facing in fitting ordinal regression model on life satisfaction data

While running an ordinal regression analysis of life satisfaction data SPSS, I got the following warning: There are 148 (65.8%) cells (i.e., dependent variable levels by combinations of predictor ...
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3 views

Some dependent variables repeated and others measured at one time

I am running a one-way repeated measures ANOVA where I have three variables that are collected at two time points and four dependent variables that were only measured at the end. I can't figure out ...
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2answers
53 views

Need help double checking results of Binary Logistic Regression in SPSS

I'm working on some of my analysis section for my Master's Thesis in MPA, and while I have consulted my professors, I'd just like to double check with some external eyes (As obviously they are on my ...
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16 views

Statistical test for unordered repeated measures under same conditions

I am unable to find the correct statistical test for the following scenario. We have a recording session with 4 subjects. For each subject, we make 8 recordings in 2 different speaking styles, let ...
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36 views

what statistical test should I use for my quasi experimental study?

I am conducting a pre and post test questionnaire for my quasi experimental study. I am using two groups one group will receive training the other will not. I will only have about 24 participants. I ...
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186 views

Using and Interpreting Moderated Mediation with PROCESS Macro

I'm trying to look at a moderated mediation analysis using the PROCESS macro in SPSS, but there are several ways I could do this and I'm not sure what would be best or how to interpret the results. ...
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13 views

Multiple Regression: 3 groups for IV, post-hoc equivalent?

I would like to test the following: DV - Brain volume IV - Participant Group (Patient with Mild Symptoms, Patient with Severe Symptoms, Controls) Covariates - Age, Gender, IQ I wish to use ...
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90 views

Relationship numerical and categorical multiple response sets in spss

The situation is the following, I have two sets of data: one numerical set of data (answer to the question "How important is this to you?" 1=little, 2= medium, 3= very) one set of categorical ...
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97 views

Hessian Hell: Why won't this converge

I want to track and compare within-subject trajectories of performance over time in study (TIME) on three within-subject task conditions (task_index) categorical variable. I am using ID as my subject ...
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43 views

How to use Little's MCAR test with multiple scales?

I'm using SPSS and have a data set which includes lots of different scales and there is missing data across all of the scales. I want to know if the data is missing completely at random. I intend to ...
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17 views

Survival prediction with messy longitudinal data

I'm a doctor, and I'm starting to get the feeling that I am rather out of my depth with a project I'm currently working on. I'd appreciate any pointers towards the correct approach, further reading, ...
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1answer
22 views

Evaluating which factors influences a questionnaire scores

i have this problem to solve. I have a questionnaire of 19 questions, each one has 3 options, and only one for each is correct and it scores 1, while the others scores 0. Thus the max score will be ...
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31 views

How important is normality assumption for a two-way repeated measures ANOVA?

I want to use two-way repeatead measures ANOVA. The dependent variable is CRP levels in three different time points in five different group of patients. Each group includes 40-42 patients, so that ...
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29 views

Explaining the results of Binary regression

I have implemented binary regression in SPSS using Forward:LR as the method. For all results are available in output what should I use to explain the results of model and see which variable is the ...