Risk of bias assessment for case-series?

More Piergiorgio Muriana's questions See All

Who does believe that Remdesivir has to be used early on and not (only) in advanced cases of SARS-Cov-2?

Remdesivir has been shown to speed up recovery times for patients with COVID-19 in a major US-led trial, becoming the first drug with proven benefit against the disease. Now, considering the...

01 May 2020 4,105 2 View

How to compute Fama - Macbeth (1973) two step regression?

Hi all, i'm trying to understand Fama - Macbeth two step regression. I have 10 portfolios and T=5 years. In the first step i compute 10 time series regressions and if i have 2 factors i get 20...

05 June 2019 8,578 3 View

Grs test statistics

Hi All, i'm testing the FF Three Factor model in the italian stock market. In my regressions i found that 3 out of 16 portfolios have alphas statistically different from 0 but at the same time...

01 January 1970 9,280 4 View

Dear all, I was wondering if anyone knows whether MGLtools and Autodock can run on Mac OS?

I have tried to download the 64-bit version of MGLtools however, as many times as I have downloaded and uninstall the programs, an error arises that the app needs to be updated. Thank you.

03 March 2021 5,997 2 View

I got 02 moderator values defining Johnson-Neyman significance regions. Is it an error?

Hi everyone, I am conducting research for my Master's thesis. I am using PROCESS by Johnson-Neyman to analyze my Moderator model. I test the relationship between Public Service Motivation and...

03 March 2021 2,350 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

Do I need to strip the PVDF membrane before staining it with colloidal gold?

Dear Colleagues, After running Western blot on PVDF membrane and detection using ECL, I would like to stain my PVDF with colloidal gold to be able to allign the ECL image with total proteins on...

02 March 2021 7,829 3 View

PACYC PCR not working after several attempts. Would anyone have any suggestions?

So, I have been trying to run a pACYC PCR which will be used later on for a Gibson Assembly. However the PCR is not working. I have already tried gradient PCR and changing extension time; however...

02 March 2021 1,146 2 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View

OpenBCI eeg--has anyone used them?

I'm looking to try out an off-the-shelf EEG set for some exploratory work. Curious if anyone has used the OpenBCI, and how much set-up work is required. I've heard they are more difficult to get...

01 March 2021 4,128 3 View

Is there any expert in Smart PLS who can help me?

Dear colleagues, I have a manuscript that needs an expert in smart PLS to run the analysis, Is there anyone expert and ready to help me, please?

01 March 2021 8,212 3 View

Mediation path analysis - Can I run two seperate models?

I am wanting to run a serial mediation model with 2 x IVs, 2 x MVs, and 3 DPs (all continuous). Is it problematic to run 2 different models for each IV, keeping the MVs and DPs the same in each...

27 February 2021 5,681 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

Alessandro Belletti

Piergiorgio Muriana you could use also the Newcastle-Ottawa Scale ( http://www.ohri.ca/programs/clinical_epidemiology/oxford.asp) or ROBINS-I tool ( https://methods.cochrane.org/bias/risk-bias-non-randomized-studies-interventions - for non-RCT comparing at least

two interventions)