To calculate sample size for cross sectional; is it scientifically sounding to consider design effect?

For example; zone ------district --------- kebele (village); to select participants

13 September 2019 398 3 View

How can I do sytematic review and Meta analyisis?

I need the steps and necessary materials for doing meta analysis and systematic review.

30 May 2019 4,953 3 View

What is the difference b/n the systematic review and meta analysis?

I need detail clarification on this issue.

30 May 2019 3,521 7 View

Can someone help me why the output curve of my metal oxide thin film transistor start from larger drain current?

I prepared IZO thin film on Sio2/si substrate and conducted IV characterization but the result of the output curve is difficult for me to undertsnd since it starts from larger current and also it...

30 October 2018 4,026 13 View

Best software for amplicon seq data analysis for malaria parasite.

14 July 2017 2,025 1 View

Data analysis using qiime for malaria parasite clones

14 July 2017 4,585 2 View

How can do an immune response (change) study based on Hemolymph samples using LC/MS system?

10 May 2017 4,401 3 View

Is there an example deep learning (i.e., CNN) code for circular object inspection ?

I just want to know whether there are any existing deep-learning libraries that are already customized for circle classification .

07 April 2017 1,108 5 View

Why some strain of E.coli grow fast on solid support than batch culture?

07 August 2016 3,746 10 View

How do I know if my plasmid is a high or low copy number type?

I want to design construct on my selected vector.However how do I know whether my plasmid is high or low copy number?

12 March 2016 3,981 5 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

No title

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

Why there are two peaks while using the mie plot of Silver nanoparticle?

Hi, I am trying to learn the theoretical modelling of silver nanoparticle using the Mie scattering theory. After that, I discovered a software named Mieplot developed by Philip Laven, where it...

25 February 2021 7,493 6 View

How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

24 February 2021 3,823 2 View

How to handle studies which report perfect effect sizes in a meta-analysis using Pearson's r?

I'm in the process of updating a meta-analysis and in one of the new studies, effect sizes are reported as Tau-U. Two of the effect sizes are reported as Tau-U = 1.00. I am using Andy Field's...

24 February 2021 2,265 3 View

Sample size determination for non-parametric tests?

How do I run a a priori sample size determination for non-parametric tests, like the Mann-Whitney U-test and the Kruskall-Wallis or other non-parametric tests that accord with the unpaired t-test...

24 February 2021 166 6 View

How to determine a priori sample size for t-test with unequal means?

I need to conduct a a priori sample size determinations for t-test with unequal means, but I don't know the sizes of the groups nor the ratio of both groups... Can I do a sample size determination...

24 February 2021 8,289 3 View

What are alternatives to factor analysis for a small sample?

My sample size is too small to conduct a factor analysis. I created my own psychometric scale for measuring Effectiveness of Support, which contains 38 items (4 sub-scales) Im really struggling...

23 February 2021 9,287 12 View