Questions tagged [spss]

IBM SPSS Statistics is a statistical software package. Use this tag for any on-topic question that (a) involves SPSS either as a critical part of the question or expected answer and (b) is not just about how to use SPSS.

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Difference between c-path, c'-path and indirect effect in mediation?

I am currently doing a parallel multiple mediator analysis with three mediators (ECVOM, SOCFAC, SCMEAN) using the PROCESS macro in SPSS. My DV is HAPMEAN and my IV is CUSTOM. I want to create a table ...
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Simple Contrasts versus Post Hoc Tests in repeated measures, which is preferred?

Planned Simple Contrasts versus Post Hoc Tests in repeated measures, which is preferred? Let's say I have a 10 (Week) x 4 (Group) repeated measures design and conducting a repeated measures ANOVA. My ...
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Multilevel logistic regression: is it possible to apply

We conducted a study and the results submitted to a journal and one of the reviewers suggested me to conduct a hierarchical logistic regression. Basically I know how to conduct multilevel regression ...
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GEE with multiple comparison for some of the subjects - SPSS

I have a data set of consecutive screening breast MRI's during 5 years. There are multiple exams for some of the patients - for example, one patient can have 5 exams, while others only have one exam. ...
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Standard Error of Estimate

In a simple regression analysis based on the least squares regression equation, I got the predicted value of 7.15 for the predictor value of 11. The sample size is 35. I computed the Standard Error of ...
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5 views

How can I see how many cases are missing for each variable in my regression in SPSS? [closed]

Since I have missing values, when I perform my regresssion, these missing values get automatically eliminated. I was wondering though if there is a way in SPSS that allows me to see how many cases/...
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What's the z-test of the compare column proportion in spss tells us?

I have two categorical variable - 1.Status - what is the occupation of the customer. 2. loyal - if a customer is loyal or not And I am trying to do hypothesis testing. My null hypothesis is that there ...
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8 views

Is this log-log plot that is produced in SPSS sufficient to PH?

How do you graphically test proportional hazard assumption in Cox regression in SPSS? Should I put the variable in the "block" or "Strata" in SPSS? This log-log plot is produced in ...
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How to interpret a significant moderation model with nonsignificant $X$, $W$, and $XW$, and only significant covariates?

First time data analyst, working on my thesis. Below is a portion of the PROCESS output for one of my moderation analyses. I have been trying to make sense of this. Alcohol use = DV JVQ = IV PWB = ...
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Independent samples t test for following up missing data - inadequate sample size

I'm running a missing data analysis in SPSS on a data set that examines correlations between an IV and five DVs (all continuous variables). Seven of the participants were inadequately sampled, so I'm ...
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What does asymptotic significance value less than 0.95 tells when results are already significant with 0.05 value? [duplicate]

I am relatively new in statistics and it is also not my major. I am just using it due to the need. I have used the SPSS tool to establish the statistical significance of two or more scales between ...
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What statistical test should i use with this data which seems to be a data from “interrupted series design-quasi experimental research”?

0 I am conducting a research, and I am proposing a new format of lesson plan for teachers. I want to prove that the new lesson plan that i am proposing is much more effective than the existing ones. I ...
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How to apply regression for variable compound from a list of choices?

I would like to know if there is some dependency between a dependent variable and an independent one. I hoped I can apply regression on my data but I can't deal with that an independent variable (...
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3-way mixed ANOVA with a covariate - how does SPSS adjust for the covariate?

I'm trying to run a 3-way mixed ANOVA (3x5x2, where the 2 is the between-factor) in SPSS. My dependent variable is accuracy, and thus cannot exceed 1. However, when I enter the covariate measures as ...
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Interaction between factors in a linear generalized linear model

I am running a generalized linear model in SPSS. I have one dependent variable (continuous) and two categorical independent variables. For some reason, when I run the analysis, the output just gives ...
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How do you code ordinal independent variables in a logistic regression on SPSS?

I have a dependent binary variable and several independent ordinal variables. Do I transform these variables into dummy variables or just leave them as is? Also, would I treat these ordinal variables ...
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1answer
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Should I use a repeated measures MANOVA or several repeated measures ANOVAs?

I'm doing a randomised controlled trial, it has four dependant variables each measured at three time points. The data is normally distributed. My question is how to analyse this. I'm wondering whether ...
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9 views

Adding variable and value labels in SPSS across large number of variables

I have a longitudinal dataset with a large number of variables that require variable and value labels. All of the variables have a prefix (e.g., time1., time2., time3.), a suffix (e.g., .age,.sex, ....
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Getting equation von SPSS Forecasting Output (ARIMA)

I am having trouble deciphering the equation from SPSS Output for a time series model. In particular this concerns two outpust. The expert model suggest for a time series of monthly sales a MA 1 ...
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17 views

Determine distribution for GLM

I would like to determine the distribution for the following data in order to explain it with a generalized linear model and further parameters: A K-S test for Poisson distribution has already been ...
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1answer
35 views

How do I get 1-, 3-, and 5-year survival with survival analysis in SPSS?

I have a database with patients and did survival analysis in SPSS. SPSS gave me the mean and median survivals with 95% confidence intervals. However, I also want the 1-,3-, and 5-year survival times ...
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Problem with nonlinear regression with proportional data [closed]

I am trying to do a nonlinear regression with proportional data, but it doesn't work in Minitab or SPSS. The variables are independent and sum up to 100 but there seems to be a problem with variables ...
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If my correlation matrix variables are below .3 for factor analysis, what other statistical analysis method should I use instead?

The majority of my variables under my correlation matrix table in my output are below .3. I have heard that this is a weak correlation and therefore factor analysis is not appropriate. If this is the ...
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1answer
33 views

Transforming a natural log of a variable into the original variable

I am using a replication dataset for a research, and one variable (GDP per capita) is included in the dataset only as a natural logarithm. Is it possible to transform the ln(GDP per capita) back into ...
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What statistical analysis? Three continuous independent variables w/ one categorical dependent [duplicate]

Trying to find what type of analysis to run. Im trying to determine if three continuous variables can predict a categorical dependent variable (physical activity) w/ three levels (high, medium, and ...
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Cohens Kappa for multiple categories

I have a data set of two observers evaluating 50 patient xrays. We are evaluating hip replacement femoral stem loosening by gruen zone, meaning a single patient may have more than one zone of ...
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17 views

Are decision trees in SPSS classification or clustering trees?

I have a dataset consisting of 140 features (categorical and continuous variables) and one dependent variable (continuous). I used SPSS classify function without setting any classes, using CHAID ...
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11 views

Should we remove negative Corrected total item correlation variables while doing Cronbach's alpha scale method?

I am having an issue in considering the variables which should either be removed from the model analysis based on their Cronbach's alpha value and what should we do with the variables having negative ...
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I have a variable with 7 sub variable. (E.g. 1 question has 7 answers)

So I did a cronbach test on all 7 answers and found that gave a result of 0.341. Unfortunately I understand we should not use this variable as it will be deemed as unacceptable, but for assignment-...
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Ordinal regression on SPSS

I'm doing an ordinal regression on SPSS and have one question: what is the meaning of the THRESHOLD in the Parameter Estimates? Most of the resources I found just say that those are not interesting to ...
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Why is it that repeated measures ANOVA does not allow continuous between-subjects factor?

I have a continuous DV measured in Time 1 and 2; time is my primary IV here. Also, there's a continuous, time-invariant moderator for each participant. I want to see whether the effect of Time on DV (...
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1answer
35 views

Conflict between OR confidence interval and p-value

I'm currently reading this study about the adherence to health checkups in Austria. Table 2 displays some Odds Ratios for attending health checkups between groups of different educational statuses. I ...
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35 views

SPSS Output Confusion Matrix

I have not worked with confusion matrices before. I am having a tough time reading them. But I am curious to why I have no values for a no (either predicted or observed), when indeed I have no ...
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20 views

Contrasts in linear mixed model with repeated measurements in SPSS

I am currently building a linear mixed model with repeated measurements in SPSS. My syntax is: MIXED measurement BY female mediansplit time WITH age /CRITERIA=DFMETHOD(SATTERTHWAITE) CIN(95) MXITER(...
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14 views

Mixed models in SPSS

We are investigating the migration patterns of a surgical prosthesis. We do this by taking X-rays and noting the migration along the 3 orthogonal axes, where T0 is the state immediately after ...
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1answer
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Mixed Models in SPSS and interpretation of Random Effects

I am trying to run a mixed model using SPSS. The example I am using is taken from the book "Linear Mixed Models, a practical guide using statistical software" of West, Welch and Galecki. The ...
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31 views

How to study the relationship between alcohol consumption, happiness and cognitive function on SPSS?

I am trying to study whether there is a relationship between alcohol consumption among older people and their happiness + cognitive function on SPSS. I am using a pre-existing data set, with the ...
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1answer
20 views

How to find the type of my distribution?

I checked the normality of my data on SPSS and one of the variables is not normally distributed. I have the mean, standard deviation, skewness, kurtosis , min and max values of my distribution. But I ...
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1answer
17 views

When conducting a meta-analysis using Pearson's R as the effect size, should you include perfect values (i.e., r = 1.00)?

I'm in the process of conducting a meta-analysis of clinical research. Since most of the included studies report Pearson's R as the effect size, I've decided to use that as the meta-analysis statistic....
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8 views

Multiple linear regression cannot be proceed [duplicate]

Assume I have a set of data and would like o apply multiple linear regression. As we know multiple linear regression has assumptions such independent variables shouldn't be highly correlated (...
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10 views

Moderated Mediation PROCESS HAYES

I'm currently struggling with the evaluation of my questionnaire. I've done a moderated mediation analysis using PROCESS in SPSS with model 8. My model includes multi categorical independent Variable (...
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1answer
12 views

How is it possible to rank variables using Likert scale?

I have a questionnaire of a 3-point Likert scale for an overall evaluation for a service, and several detailed attributes evaluation of that service. For example: Overall Evaluation (1-3), then ...
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2answers
96 views

Replicating an SPSS manova in R

I'm trying to replicate the top part of the SPSS manova table 3.17 shown on page 127 in this book (just type 148 in the page ...
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21 views

Binary Logistic Regression using Non-Dichotomous Independent Variables; SPSS [duplicate]

I'm using SPSS for binary logistic regression but one of my independent variables is non-dichotomous and categorical (genotype - there are 5 gene combinations possible). I'm trying to see if a ...
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18 views

Binary Logistic Regression using SPSS for Non-Dichotomous Independent Variables

Im using SPSS for binary logistic regression but one of my independent variables is non-dichotomous and categorical (genotype - there are 5 gene combinations possible). I am trying to see if a ...
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13 views

Correlations comparison between trialgroup and controlgroup using SPSS

I am new this community site and I need your help. The data below needs to find out how to get correlations pairs between trial group_store_NBR (store1 as 5) and control group_store_NBR. ...
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1answer
25 views

What would be the most appropriate test to compare two groups in the three parts of the data?

I have a response dataset for twenty-five questions, which measures three grammar topics. The participants are two different English proficiency groups of intermediate and advanced. So, I want to ...
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1answer
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How can I cluster plant biomass and grain weight for different plant varieties using Ward's method based clustering?

I have plant biomass and grain weight data for different plant varieties which I now need to cluster. Do I need to define the number of clusters if using Ward's method and Squared Euclidean distance ...
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8 views

Cross-validation for General linear model in SPSS

I am trying to predict the stress due to COVID using several predictors line age , race, gender, financial status.. We got data from a survey. Some of the predictors are categorical, some ordinal. ...
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14 views

Correcting for multiple comparisons in simple main effect analyses after signifcant 2-way interaction in SPSS

I ran a 2 x 2 x 8 repeated-measures ANOVA in SPSS and there is a significant interaction of factors A and B (both have two levels). To interpret this interaction, I ran simple main effect analyses ...

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