SPSS (Statistical Package for the Social Sciences) is a proprietary cross-platform general-purpose statistical software package.

learn more… | top users | synonyms

6
votes
0answers
114 views

Balanced repeated measures design

Okay this is my problem: I have 12 participants. Each participant spent 3 nights in my lab doing a reaction time task at four timepoints during the night(12, 1, 2 and 3 oclock), with one week ...
4
votes
0answers
138 views

Interpretation of mixed model with repeated measures

I have performed the following experiment: Two genotype groups of two different ages were monitored in the presence of three drugs one after the other. So, each subject after a control period received ...
4
votes
0answers
736 views

How to assess mediation effect in multinomial logistic regression?

I wonder if it possible to include a mediation effect in multinomial logistic regression. I have a categorical (3 categories) outcome variable and four predictors (all continuous). I expect one of the ...
3
votes
0answers
79 views

Binomial logistic regression in SPSS using survey weights

I am running a logistic regression in SPSS with a sample that uses survey weights. The sample size is 1000 and the weights are along the lines of .86 or 1.23 depending on the case. I am using the ...
3
votes
0answers
121 views

Is it possible for my mixed model results to be the same as those for a repeated measures ANCOVA? Why don't I get the same results? SPSS

The experiment: Two groups of children perform tasks with three levels of difficulty at two different time points and brain activity is measured. All of the children perform all of the tasks and do so ...
3
votes
0answers
234 views

What does the Scale parameter mean in linear regression?

I have started to use the GENLIN procedure in SPSS more than any of the specific dialogues, but I don't understand the Scale parameter or why it has the effects it ...
3
votes
0answers
373 views

GEE (or GLMM) in SPSS: Interpreting outputs and model selection

I am attempting to analyze my (experimental psych) data in SPSS, and I have a few questions regarding the kind of analysis I should be using (GEE or GLMM), how I should be interpreting the output, and ...
3
votes
0answers
490 views

How do I estimate a repeated measures ANCOVA in R and SPSS?

I'm currently running a perception experiment: DV: error (this in degrees- how much an observer was away from the real answer) IV: the time bin (5 levels) in which the unique stimulus appeared ...
3
votes
0answers
74 views

Time series with 3 factors from different sources

I've been asked to try to do a preliminary 'meta-analysis' of some data, but while comfortable with maths I don't have much experience with stats. I'm hoping to get some feedback with what I have ...
2
votes
0answers
25 views

How to code and analyze skiped questions with SPSS

sorry if my question may seem rather silly, but I'm not well up on statistics and need a piece of advice. I have some cases in my dataset where respondents have abandoned the survey half-way, so I ...
2
votes
0answers
26 views

Composite Scores and Standardized Composite Scores t test

I have a set of survey data related to 20 survey questions. Each of these questions represent a variable (Q1, Q2,......
2
votes
0answers
24 views

How to compare 37 dichotomous variables (lab tests) to 31 dichotomous variables (diagnosis)

I've constructed a database based on chart review of patients. Patients had a variety of tests performed (37 different types, which were either positive, negative, or not performed aka 1/0/blank - I ...
2
votes
0answers
49 views

Does it make sense to plot train and test results on a common ROC graph?

I am building a model using SPSS with 80% of my data. I can plot a ROC curve for both the training set and separately for the test set. I can´t find a way to plot both on the same graph. Since both ...
2
votes
0answers
40 views

Which model for data which has within-effects, between effects and non-parallel lines

My data (Panel, 19 countries, 7 years, ordinal outcome variable) has within-effects (countries over time), between effects (between countries) and it seems as if the slope of lines (test of parallel ...
2
votes
0answers
65 views

If I compare conditions within two preexisting groups is that a quasi-experimental design?

I have two groups of participants, one group of psychosis patients and one group of controls. All of the participants complete a computer task that has three different conditions. So, I want to make ...
2
votes
0answers
51 views

User-defined contrast on Generalized Estimating Equations

I am running a GEE on SPSS as well as Stata on choice data with the following structure: Each subject completed 32 trials in 4 ...
2
votes
0answers
89 views

Test regression parameter against a constant in SPSS

This is a pretty basic question, but I can't find an answer by searching for different statements of the same problem. Is there a straightforward way to test if a regression parameter is different ...
2
votes
0answers
81 views

mixed ancova or difference scores?

I am puzzled with how I should analyze the following data: The dependent variable is respiratory sinus arrhythmia, a measure of parasympathetic activity (RSA). I have a $5\times5$ full factorial ...
2
votes
0answers
56 views

What type of Design is this?

Participants are asked to recall either a happy or sad event in their life. Once a mood of happiness of sadness has been elicited all participants are then presented with 3 stories where the central ...
2
votes
0answers
59 views

ANOVA variable that is both BETWEEN & WITHIN

Does anyone know how / if can you treat an independent variable as BOTH a between AND within subjects variable (ideally in SPSS ANOVA-repeated measures). That is, we have a repeated measures study ...
2
votes
0answers
296 views

How to cluster standard errors (by country) using SPSS?

I'm trying to obtain robust standard errors as my regression residuals seem to be correlated... My sample data has 8 countries and I would like to cluster the standard errors by these 8 countries ...
2
votes
0answers
218 views

Mean Survival Time Cox Regression

I am new at using survival analyses. I am writing an article on differences in recidivism for an experimental and control group of offenders. Due to differences between the groups in gender, I have ...
2
votes
0answers
739 views

R vs. SPSS Kolmogorov-Smirnov test

I was recently given the following data. 7 1 6 6 2 8 3 7 4 6 3 3 1 8 4 5 9 3 2 4 1 4 4 3 6 3 4 2 3 2 7 2 7 4 2 4 4 4 3 2 2 4 5 8 6 4 3 1 5 5 I then ran a KS test ...
2
votes
0answers
370 views

Split-split-split plot cross-over design… is this even possible?

I'm doing statistical analysis on a psychology study I ran a short while ago, and I'm starting to think that I've designed myself into a corner. In the study, we measured participants' pointing ...
2
votes
0answers
608 views

Differences between Stata & SPSS in multiple regression outcomes

I'm a graduate student working on a thesis whose aim is to test complementarity between 2 practices (CI and INNO, according to theory of supermodularity). To do so, I calculated two new variables ...
2
votes
0answers
351 views

Controlling for a variable in a GEE using SPSS

I have a dataset which I think would suit GEE. I am trying to assess the relative contribution of a number of simultaneous predictors and their interactions to the intensity of hurt feelings. I asked ...
2
votes
0answers
124 views

How to do post-hoc contrasts on within factor depending on certain between groups in SPSS?

Here are my experimental factors: within-factor (two levels): time1, time2. between factor (four levels): 4 groups. I want to test specific post-hoc contrasts comparing: group1: time1 vs. time2 ...
2
votes
0answers
2k views

Does anyone have experience with IBM's “SPSS Modeler”?

SPSS Modeler seems like a great tool for data mining (especially for prediction etc.) but it is extremely costly for individuals like me (around 20,000 euros excl. tax). There is also a video. I am ...
2
votes
0answers
259 views

How to test for differences from baseline where dependent variable is non-normally distributed using SPSS?

I have some physiological measurements which consist of 4 events measured in a "during task" condition and preceded and followed by a rest period. I want to test that the data points immediately ...
2
votes
0answers
292 views

Multiple imputation using SPSS

I am working with a database with missing data. I have done "Roderick J. A. Little’s chi-square statistic" and knew that my data are not MCAR. However, I know don't have can I determine if there are ...
2
votes
0answers
774 views

How to perform Fisher exact test in SPSS?

I've collected around 10 numbers of ants from a colony and introduced the same numbers of ants to the same colony (say Colony-1) at their entrance to see their behaviour (whether they accepts or ...
2
votes
0answers
554 views

Multiple response question with duplicated answers

I have a multiple response (categories) question (Q11, ..., Q15). My problem is that the data-entry clerck repeats the answers in the same case. Example: ...
2
votes
0answers
373 views

Factor analysis: regression equation and residuals

I have used factor analysis with regression method. I was trying to develop an index using this regression equation by using the output of the component score coefficient matrix (SPSS) generated for ...
2
votes
0answers
507 views

Problem with casewise list in logistic regression

I am using binary logistic regression to test this model: logit(ρ1) = α + β1(INDDIR) + β2(INDCHAIR) + β3(BOARDSIZE) + β4(DIRSHIP) + β5(MEETING) + β6(EXPERT) + β7(INSTI) + β8(DEBT) + β9(LnSIZE) + ...
1
vote
0answers
20 views

How to apply GEE and how to use it for critical mass

sorry I am completly new to the forum and as well to using GEE and SPSS so I hope my question is not to confusing. My dependent variable is the firm performance and I have several controlling ...
1
vote
0answers
12 views

Comparing groups using SPSS

I have a dataset with 2 measures that were tested over 30 time points. I have a two groups of people who have both measures at all 30 time points. How do I compare the groups using SPSS?
1
vote
0answers
15 views

Linear Mixed Models with variable time points in SPSS

I am analyzing a clinical study measuring patients' symptoms and brain structure sizes over three time points. The "visits" should be at baseline, 3 months and 12 months but they vary considerably and ...
1
vote
0answers
59 views

Which graphs are best suited to visualize multiple pre- and post-test scores between multiple groups?

I have a relatively small sample ($N = 64$) with the following variables: ScoreA_I: continuous pre-test response variable ...
1
vote
0answers
27 views

random effect in mixed linear model SPSS

I am using a mixed linear model to analyze the effect of two types of treatment on symptoms. The two treatments were administered in smaller groups (clusters), and delivered by several doctors, so I ...
1
vote
0answers
31 views

SPSS: How to decompose interactions in repeated measures ANCOVA?

I conducted a study with three categorical within-factors and one continuous personality variable: topic (1,2) x gain loss framing (1,2) x achievement security framing (1,2) x personality I know how ...
1
vote
0answers
37 views

Discontinuity Regression

I'm writing a political economy Master's thesis regarding the effects of the Euro Crisis on the rise of separatism in Spain (Catalan independence for example). The idea is to show that the Crisis has ...
1
vote
0answers
32 views

I'm stuck: How to 'bin' multiple binary outcome variables and then analyze within subject?

I have what feels like it should be a very easy analysis to work out, but I've been trying for hours and I can't figure it out. I'm using SPSS by the way. I have 10 (5 of each group) different binary ...
1
vote
0answers
38 views

Relative Variable Importance in Clustering

In SPSS, the user can check the relative variable importance in a clustering result and produce a graph like the following: link: ...
1
vote
0answers
83 views

What do the tests of model effects and parameter estimates really tell (when an interaction is defined)?

A couple of times in LMM or GEE (with SPSS, though I doubt that matters – and might occur in other analyses as well, but these are the ones with which I have seen it) I have seen something that seems ...
1
vote
0answers
72 views

is it possible to use partitioned data(train&test) together with cross-fold validation?

I have used SPSS Clementine in order to train a classifier, for this I have used a partition node with 2 parts(train and test),then using a c5-tree and cross-fold validation. I did this because I ...
1
vote
0answers
34 views

Running standardized/unstandardized regression equation on SPSS

I am working on a regression assignment using SPSS. I have raw, centered, and z scores for the data. I already regressed the DV and IV and see the unstandardized and standardized coefficients under ...
1
vote
0answers
61 views

Different degrees of freedom when using the same mixed effect model (SPSS)

I have a question regarding mixed effect models. Is it possible that the degrees of freedom differ when I use the same model with different dependent variables? Or does that indicate that something ...
1
vote
0answers
55 views

Generalized Linear Mixed Model

I have three independent variables (all binary) and two interaction variables that I would like to test for their effect on the dependent variable "Awareness_level". This dependent variable is also ...
1
vote
0answers
40 views

Difference between BIRCH and Two-Step Clustering

I don't have SPSS. But judging from the documentation you can find on the internet, SPSS "Two-Step Clustering" seems to be closely related to BIRCH clustering: Zhang, T., Ramakrishnan, R., & ...
1
vote
0answers
50 views

comparing two groups on ordinal data with covariates

Hi I am using SPSS to compare two groups on ordingal data (frequency of substance use): never, 1-5/week, 6-10 week etc. The substance use data is highly skewed and non-transformable so ANOVA is out. I ...