Under what circumstances could we use stepwise linear hierarchical and Multilevel regressions?

More Berhanu Nigussie Worku's questions See All

Mixed effects model or Generalized Estimating Equations (GEE)?

Which of the two statistical techniques - mixed model or GEE - is preferable to analyze repeated data, and why? Cheers, Berhanu

06 July 2018 8,770 7 View

While preparing a manuscript of academic research for publication, is it important to keep clinician readers in mind too?

That is it. Forward your brilliant ideas and thoughts! Peace with you all! Berhanu

10 November 2016 2,785 4 View

What are the extra advantages of entering data into Epi-Data instead of directly entering into Statistical Software such as SPSS ?

P/s forward your opinions and ideas in terms of managing the quality of data!

05 June 2016 9,429 5 View

Are there sound & valid scientific evidences for the hypothesis" Satisfied needs and completed tasks are easily forgotten"?

You can also share your personal experiences and anecdotes to prove or disprove the long hypothesized statement! Pleasant time! Berhanu

05 June 2016 8,155 1 View

What is your favorite LIFE and/or HAPPINESS quote ever?

Please share your unforgettable ones!!

04 May 2016 6,218 7 View

Why having one definite definition of Quality of Education is difficult for educators?

Indicators of quality of education are usually inputs, processes and outputs. However, the definition of quality is always controversial and debatable. Why do you think it is so? Cheers, Berhanu

03 April 2016 8,537 5 View

Can anyone be a leader with training?

I am curious to know whether a leader is born or made??

02 March 2016 2,890 1 View

Why top ranked journals do not publish negative findings?

Have you really experienced this! Your observations are welcome!

02 March 2016 3,935 4 View

Is it possible to effectively utilize Randomized Clinical Trial (RCT) design in behavioral sciences research?

I really really need clarity whether we could use RCT in areas such as child development! Eager to hear from U all!!

02 March 2016 1,489 8 View

What are the effective tips to motivate students' statistics course learning?

P/s suggest me some effective techniques to encourage social science students to participate and successfully learn stat course at Masters level!!

31 December 2015 8,335 4 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

Treating Intermediate Variable in Linear Regression Analysis in SPSS?

While performing the Linear regression analysis in SPSS version 26.0.0. my intermediate/mediation variable goes to the excluded section. Please share your valuable suggestion "How to restrain the...

25 February 2021 4,591 5 View

Cox regression baseline hazard?

Dear colleagues, I would like to make a mathematical equation of Cox regression model, however I am stuck with baseline hazard. I clearly understand interpretation of coefficients, but I can't...

24 February 2021 6,207 3 View

How to run raise regression in R?

if anybody know how to run raise regression in r, and raise parameter selection, please help me

24 February 2021 8,199 1 View

Can anyone suggest me the best way for Regression analysis of Accidents?

Dear Altruist, I want to make a regression analysis based on accident data. But I am not finding the necessary information about what type of regression is more applicable for analysis accident...

23 February 2021 9,956 3 View

Berhanu Nigussie Worku

P/s share me your expertise so that I can confidently use them to analyze my data!

s. Béatrice Marianne Ewalds-Kvist

Dear Berhanu,

Under e.g. this circumstance:

If you want to control for e.g. the effect of age and socially desirable repondents then you can check this in your set of variables and see if they are able to predict a significant amount of variance in e.g. attitudes towards mental disorders.

Thanks dear!! I need more explanation thought!!

Informative resources, many thanks dear!