Hamdan Zaki Hamdan

6 Questions 20 Answers 0 Followers

Questions related from Hamdan Zaki Hamdan

How to perform Subgroup analysis in meta-analysis by using R ?

I am conducting meta-analysis by using R package (metafor), it seems i have a significant heterogeneity, so I need to do sub-group analysis guided by gender (categorical) and age (continuous)...

19 September 2020 1,416 3 View

For TB patients under treatmen and then develop MDR-TB. is it possible to differentiate between aquiring new MDR-TB bacteri from emerging the old one?

In a cohort study for TB patient we need to investigate the effect of specific intervention in the TB susceptible patient and TB-MDR patient. we are interested in the TB susceptible who develop...

11 September 2018 1,530 3 View

How to assess scale reliability and validity?

I am conducting a qualitative study which i need to develop a scale, I need to know how to assess the reliability and validity of this scale?

21 September 2017 8,204 6 View

What happens first; does hypertension cause hyperuricemia or does hyperuricemia lead to the development of hypertension?

Uric acid in relation to hypertension is it a chicken or egg?

11 December 2015 7,535 7 View

I would like to know how to evaluate the degree of clashes that may arise when specific amino acid replaced with other?

Missense mutation changed the amino acids, this changing in amino acids diffidently will change the surrounding environment for the original amino acid and create new clashes with other amino...

06 November 2015 5,035 1 View

How can i quantifi an enzyme which expressed in tissues not in blood cells?

I try to measure the enzyme concentration for the NO3 which is an endothelial enzyme expressed mainly in the endothelial tissues, some literature report measuring from blood samples, but is it a...

21 September 2015 1,810 3 View