Covariate selection for multivariable logisitc regression?

What are the is the scientifically valid approach for selecting covariates to include in a multivariable logistic regression model: -Clinically important covariates -Those with p-value e.g.

20 May 2020 6,163 3 View

Use of parametric tests for not normally distributed data - central limit theorem?

Can we use parametric tests for data that are not normally distributed based on the central limit theorem, especially if we have a large sample size?

17 November 2019 7,126 52 View

What is the exact mechanism of the antimicrobial effect of local anesthetics?

The antimicrobial effect of local anesthetics has been known for more than 50 years, but it still seems to have an unclear mechanism of action. which bacteria? which concentration? etc etc. ....

27 February 2021 4,450 2 View

How to perform Kaplan-meier survival analysis in SPSS?

Hi everyone, This is my first time of attempting to run survival analysis. I have a data on patients with End-stage Kidney Diseases (ESKD). I would want to run survival probability by treatment...

16 February 2021 2,647 3 View

Which Journals would you advise to submit a Letter which briefly talks about neurosurgical treatment of neuro-oncological patient during Sars-COV-2?

Possibily not an open access journal which does not add any publishing costs once being accepted. Thank you in advance

09 February 2021 717 6 View

Patients with chronic kidney disease could get COVID-19 vaccine?

04 February 2021 278 4 View

Need a research paper for multi speaker and single microphone acoustic echo cancellation?

Hi, I am working on a problem that involves multiple smartphones/tablets. All devices are playing the same sound with synchronization difference up to +- 5ms. Now, there is an echo issue and I...

02 February 2021 5,929 3 View

The First Survey Addressing Patients with BMIs over 50?

Dear Bariatric Surgeons, The importance of obesity management in patients with BMIs over 50 has not been completely addressed and it should be considered separately from patients with morbid...

20 January 2021 2,748 1 View

PME calculation on a GPU GROMACS?

Hi all I used the following script to run the simulation but for some reason, I was not able to assign GPU to do the PME calculation? How to do that? The size of the system is huge (600.000...

14 January 2021 7,441 1 View

Is not POLITICS involved in science these days?

Respected Fellows, First and foremost, wish you all, all the very best for the year 2021!. I was formerly a faculty member in Canada (2006-2011, Assistant Prof.), then came back to my...

04 January 2021 7,886 4 View

What are the Methods to evaluate nephroprotective activity of herb in diabetic and hypeetensive nephropathy or CKD?

Usualy nephroprotective drugs of plants orgin were evaluted in nephrotoxicity animal model. But CKD secondary to HTN and DM is also common. What are the method to develop these animal model in a...

28 December 2020 161 2 View

Are OAE publishers genuine or predatory publishers ?

I received an e-mail from OEA publishers to submit an article for their special issue on Oral and Maxillofacial Surgery. I was naive enough to succumb to this request. I submitted my article which...

27 December 2020 6,454 3 View