Sample size calculation for multinomial logistic regression model?

May I know how to do Sample size calculation for multinomial logistic regression model?

10 November 2018 9,690 3 View

How to standardize coefficient in multinomial logistic regression model in SPSS?

(1). How to standardize coefficient in multinomial logistic regression model in SPSS? (2). After standardization of the coefficients in different multinomial logistic regression model, can we...

10 November 2018 7,648 0 View

How long can i put my sciatic nerve tissue in the formalin solution for future immunofluroscent staining?

how long can i put my sciatic nerve tissue in the formalin solution for future immunofluroscent staining?

04 May 2018 265 0 View

How to quantify axonal loss without taking nerve biopsy but take nearby tissue in carpal tunnel syndrome?

I plan to take some tissues nearby while doing open release for carpal tunnel syndrome to quantify axonal loss of the injured median nerve. May I know any good laboratory techniques ? Thank you

01 February 2018 9,282 1 View

How to check multicollinearity of IVs in ordinal regression model using SPSS?

Dependent Variable (DV) is ordinal data. Independent variables (IVs) are continuous data. Using SPSS, Multicollinearity test can be checked in linear regression model. However, this is required...

11 December 2017 4,795 4 View

How to deal with irrational but statistically significant predictor in the model?

I have a dilemma when doing bootstrapping method to examine my model: I identified predictor A & B in my regression model as significant estimates. However, it can be rational only when (A...

10 November 2017 7,975 9 View

How to determine accuracy of predictors in ordinary regression model using SPSS ?

I have created an ordinary regression model with acceptable model-of-fitness, significant predictors, no sig. of test-of-paralelle line etc. Now I wish to determine accuracy of my predictors of...

10 November 2017 7,364 9 View

How is the performance of the ROC curve acceptable for publication?

I have sort out cut-off values of variables for differential diagnosis using an assessment tool. Although all the cut-off values are significant, however, the area under the curve (AUC) are from...

08 September 2017 9,555 2 View

How to perform multinomial scaling using SPSS?

Any guidelines for performing multinomial scaling using SPSS?A step-by-step guideline is preferred.

01 January 1970 8,023 0 View

With a poor performance in ROC curve of the model, does that mean the model is useless at all?

I created a binary model with results as follow: 1). Omnibus Test (Chi-sq.=31.705, p0.05) The model was statistically...

01 January 1970 3,875 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 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 repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

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01 March 2021 3,905 5 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

Is it necessary to report effect size (ES) in statistics of biomedical research given that we already report p values routinely?

Pls share your thoughts

01 March 2021 7,330 4 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