1. A

    How can evaluate the significance of unbalanced variables?

    We have a questionnaire which has a question with three options: "a", "b", and "c". All participants are allowed to choose one of these three options. "a" represents the condition "X" and, "b" and "c" both represent the condition "Y". Our goal is to compare the condition "X" with the condition...
  2. F

    A little clarification on logistic regression in SPSS

    Hi! I need some clarification. I have a dichotomous outcome (not cancer/cancer) and I want to analyze the influence of 5 different variables (2 continous and 3 categorical) in predicting one of the outcomes (cancer). For that I ran a binomial logistic regression on SPSS and I got the following...
  3. J

    Trend analysis

    In a period of 14 years we collected MRIs on different patients. For all the MRIs I have a variable on which day after diagnosis the MRI was made. I want to know if MRIs were made much faster at the end of the study than at the beginning --> so I want to know if there's a trend. How would one do...
  4. I

    How to analyse - [SPSS] NPI+Gender IVs on Attractiveness Score DV

    Hi there, I have been struggling with stats for a while and have turned myself on my tail, any help would be super appreciated. Research is looking at Narcissism Score (NPI) and attractiveness, how would I analyse this in SPSS? I want to look at the relationship the two IVS have on Attract...
  5. H

    How to change the alpha level in SPSS?

    I have to do a Mann-Whitney U test in SPSS and it has to be alpha = 0.01, one-tailed. I know the default is 0.05, but I don't know how to change it to 0.01 in SPSS (for Mann-Whitney U test). Is it even possible?
  6. S

    SPSS interpreting change scores, am I doing it right??

    I had to calculate some change scores for my dissertation. I didn't even know what they were until my prof told me to do that in addition to my other statistics. I tested 2 groups, 1 got supplements the others a placebo and tested them before and after taking them. They filled in mood and stress...
  7. S

    Mixed Effect Model in SPSS

    I keep getting error messages:' The levels of the repeated effect are not different for each observation within a repeated subject.' Can anyone offer me some advice whether I can perform Mixed Effect Model in SPSS with my data or I have organised my data correctly? I have two groups of...
  8. S

    How can I make a chart with the percentages/values labelled?

    I have tried making graphs will graph-builder. For some bizarre reason cannot get the charts made up with he percentages/values labelled. I know it sounds simple but its not obvious to me. Would really appreciate any help. BW
  9. S

    Error messages for Mixed Effect Model in SPSS?

    I keep getting error messages:' The levels of the repeated effect are not different for each observation within a repeated subject.' when performing Mixed effect model in SPSS. I have two groups of participants X and Y who performed two sets of tasks i.e. A and B. Group 1 has 12 subjects...
  10. S

    Three way interaction with Process (Hayes).

    I'm going to do a three way interaction in Spss with Process. And I was wondering if you guys could help me explain whats happening behind the scenes in Process? Preferably with some references so I can look at it myself. Thank you! The interaction looks like this: ..............M...
  11. F

    Odd ratio in subgroups for a continuos outcome variable.

    I'm stuck in this. I have a population divided as follow. Population as been randomised among Standard or Sperimental procedure. Surgical access was Laparoscopy or Laparotomy. Objective is to decrease Day of recovery. Data example as follow: <table><tr><td>Intervention...
  12. A

    Which test to use? - SPSS

    Hello everyone, It's my first time analyzing data and putting my results in a paper... My topic is in how far the educational attainment level has an effect on social wellbeing. I did some research online and I'd like to focus on these coherences: social wellbeing as dependent variable...
  13. I

    How can I split the mean (e.g. split the mean by gender) in SPSS?

    I am completely new to SPSS and I have to split the mean by one variable or even by two variables ("produce a single table showing the mean of the symptom severity checklist score before and after treatment, split by anxiety disorder and by patient gender") This is just the example I have been...
  14. H

    Repeated measures 2x3 design on SPSS

    My data has two factors. Factor 1 has 2 levels and Factor 2 has 3 levels. ie a 2x3 design. Right? The study is within-subjects. So on SPSS, I went to General Linear Model -> Repeated Measures and entered factor 1 (2) and factor 2 (3). But then when I go to define it, SPSS gives me: 1,1...
  15. F

    [SPSS - Mixed Models] Repeated measurements data from randomised controlled trial

    I am analyzing data from a randomized clinical trial, with 2 intervention groups (placebo and intervention) and repeated measurements over time. I am planning to use linear mixed effects modeling to analyze this longitudinal data and determine whether the intervention causes a change in response...
  16. L

    Multinomial Logistic Regression, 2x2 Between Participants Design

    Hello everyone, I would really appreciate some advice on how to interpret my SPSS-Output. I have tried to figure it out myself, but haven't been able to get an answer. I have 2 binary independent variables and 1 dependent variable with 3 categorical outcomes. So a 2x2 Design. In order to...
  17. P

    spss and likert scale

    Hi,wondering if you can help. I am using a likert scale which does not give much information as to how to analyse the score. In theory, the minimum and maximum range are 16-112. High scores shows stress. My test results range is between 16-81(47 participants) and I need to work out a...
  18. L

    SPSS - repeated measures ANOVA (1 between subjects factor, 3 within subjects facotrs)

    Hi! I'm using a windows 10 system and SPSS 23. I'm struggling with the procedure to analyze my data. My design has 4 factors: 1 is a between subject factor (there are two different groups of people that I tested) and the other 3 factors are within subjects (size - 9 levels, pattern - 4 levels...
  19. R

    Cox Regression with missing values

    Very grateful for any advice. I'm trying to perform Cox regression on a data set with multiple random missing values. SPSS is my go-to software, but the Cox regression algorithm applies LISTWISE deletion to all cases with missing values, resulting in omission of >30% of the cases. I'd rather...
  20. A

    Multi-level analysis, mixed-models: problem with convergence

    Dear reader of this post, I'm conducting research where I have 8 mental health care teams and three dependent variables: victimization, discrimination and social functioning. My research question is whether the socioeconomic status (SES) has influence on my three dependent variables. My...