Amr Hanafy

14 Questions 24 Answers 0 Followers

Questions related from Amr Hanafy

Causes of increased P value in multivariate Logistic regression despite its significant value in univariate analysis?

for an outcome (relapse after therapy, yes or no), when univariate logistic regression was applied; p value for each variable was significant, then if multivariate logistic regression was applied...

21 November 2024 5,434 4 View

Statistical test that compare value of a variable of 2 groups; one is parametric and the other is non parametric?

comparison of age value in group I which was parametric and group II was non-parametric. What suitable test that compare both values; t test or Mann Whitney?

04 November 2024 3,249 2 View

Statistical test that compare 2 areas under the curve in ROC curve analysis?

ROC curve analysis to detect the best cut-off of the independent variables in the prediction models

13 May 2024 8,458 4 View

Prediction curves , what is new?

how to do calibration curves for the prediction models in SPSS, i think it is important in addition to the external validation

27 April 2024 2,078 3 View

Microbiota indirect markers in stool analysis ?

indirect stool markers of microbiota which could be applicable and cheap which can replace microbiome analysis which is exhausting and expensive. can we find new indirect markers like short chain...

21 February 2023 8,538 0 View

A patient with recurrent glioblastoma resistant to chemo-radiotherapy and recurrent after surgery, is it wise to give mTOR inhibitor as rapamycin ?

safe mTOR inhibitor and what are the drugs with anti glutamine effect?

23 June 2020 5,043 0 View

Why you may select African journal of gastroenterology and hepatology (ajgh.net) ?

African journal of gastroenterology and hepatology is free (no any article publication charges), the submitted material is subjected to revision via a software program for plagiarism, an open...

20 August 2018 3,590 12 View

What are oncogenes in the serum associated with hepatocellular carcinoma ?

early prediction of HCC is mandatory in high risk patients

29 March 2016 5,744 2 View

Definition of cut off value of short and long ICU stay?

cut off value of short, intermediate and long ICU stay

01 March 2016 6,760 9 View

What is the cutoff value of short-term survival to show effect of drugs on disease progression?

18 February 2016 2,786 3 View

Which is better for prediction of HCC: APF L3 or des-gamma carboxy-prothrombin f

HCC Prediction is better than paliative treatment?

17 February 2016 5,552 8 View

Where i can find centers which support training for advanced endoscopic procedures in GIT?

EUS, ERCP, other advanced endoscopic procedures in GIT

17 October 2015 7,873 10 View

Diurnal variation of bleeding esophageal varices commonly to bleed at night, what are the most important blood factors to search?

oesophageal varices bleed at night may be due to plasminogen, tissue plasminogen activator antigen and plasminogen activator inhibitor or clotting factors diurnal change

26 August 2015 9,025 3 View

Can we find a marker of oesophageal mucosal injury that can be detected by stool analysis?

GERD induced injury to esophageal mucosa, can we detect mucosal derangement non-invasively by stool analysis

26 July 2015 1,312 12 View