How do I calculate a power analysis for repeated measures ANOVA?

I did a clinical trial for 2 groups (30 Type 2 DM patients in each group), and after I complete the study I did 2*3 (2groups and with 3 continuous measures: at baseline, after 3 months and after 6...

13 August 2020 4,808 4 View

What is the best regression analysis?

I did and educational intervention to type 2 DM (clinical trial for 60 patients, 30 in intervention arm and 30 in control arm) I want to do regression analysis to a dependent variable, improvement...

27 May 2020 5,853 21 View

Anybody here can help me to do little exercise at Matlab ( only one page ) ?

Anybody here can help me to do little exercise at Matlab ( only one page ) , I done it in excel but I want it to be at MATLAB, its little equations in thermodynamics?

04 May 2020 7,157 3 View

Using multi regression in curve fitting?

I have many data regarding two independent variables. I asking for how to get a fitting curve to predict the attitude of the two variables. I wonder if it will be beneficial to use multi...

03 March 2020 9,221 3 View

What stratified randomization means?

Does stratified randomization for diabetic patients based on HbA1c values (above 7 and less than 7%) mean that we will enroll one patient with uncontrolled hyperglycemia in the control group and...

21 October 2019 6,914 3 View

Retention rate in clinical trials?

Can a researcher get higher than the desired sample size in one arm of the study? Example if the sample size is 60 patients (30 in each arm) and one assumes 30% loss to follow up with a total of...

09 October 2019 2,180 5 View

% population of CD4 CD25 and FOXP3 for Control Vs Test groups?

After some reading and checking for the Treg cells during helminthic infection, I found my self somewhat confused for the % populations measured for CD4 CD25 and FOXP3 for Control against Text...

18 March 2019 6,915 3 View

What is the Average RNA yield from FDC-P1 cells?

15 November 2018 6,159 2 View

Transforming non-normally distributed data for regression analysis?

Hi there - I'm working on a regression analysis to investegate the influence of dark personality traits' collected through HDS on overall leadership quality examined through a manager quality...

28 September 2018 4,097 4 View

What is the required sample size for randomized clinical trial among diabetic patients?

If previous studies showed a reduction of 0.71% in Hba1c (SD = 0.55) in inetrvention group and 0.25% (SD=0.47) in control group what will be the required sample size for this study to achieve 0.05...

24 July 2018 8,954 14 View

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 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

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

How could I process data in RCT to include it in meta-analysis?

I'm in the process of doing a meta-analysis and have encountered some problems with the RCT data. One of my outcom is muscle strength. In one study, I have three different measurements of muscle...

25 February 2021 7,603 3 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