Georgios Mavropalias

10 Questions 4 Answers 0 Followers

Questions related from Georgios Mavropalias

Analyzing 5-item Likert scales of 'strongly disagree' to 'strongly agree' as dichotomous variables ('agree' / 'disagree' only)? What about 'neutral'?

5-item Likert scales ('strongly disagree', 'disagree', 'neutral', 'agree', 'strongly agree') are sometimes converted to 2 levels ('agree' and 'disagree') for statistical analysis as a dichotomous...

10 November 2022 7,248 3 View

Best package for statistical power analysis in R?

Hi, I have used the package pwr in R, but it falls short when compared with the GUI program G*Power (https://gpower.hhu.de/). G*Power has a wealth of options and analyses but pwr is more...

23 July 2020 3,911 3 View

Explicit scientific syntax for academic writing (like a programming language but for scientific reports and publishing)?

This is a project I am thinking of working on in the future. Is anyone familiar with attempts to codify and create an explicit syntax for reporting science? E.g. like you would have specific...

10 January 2020 9,419 3 View

Institution-independent research - how do you obtain ethics clearance?

Hi, If someone wants to do independent research (e.g. they design a questionnaire and ask people to take part, or they are a personal trainer and they collect data from their patients for a new...

06 December 2019 5,660 3 View

How can we calculate torque in dynamometers without knowing the distance of the lever?

With dynamometer tests, we get torque values. However torque = distance x force. Since the biodex (or the labchart if you're reading the data from the data from the computer) does not ask for the...

06 May 2019 383 4 View

Which scale do you prefer for methodological quality of human trials? PEDro or PRISMA?

Hello, just as the title says I want to choose a scale to assess the methodological quality of the studies included in my meta-analysis. Which one you would use and why? Pros/Cons?

09 April 2019 6,760 4 View

Is it possible to compare ultrasound echo-intensity in images with different brightness and contrast from different studies?

Hello, I would like to compare the ultrasound echo intensity of different patients and research participants, but those images are taken from different ultrasound machines and with different...

11 December 2018 6,739 3 View

Ignore, cannot delete?

Ignore

11 December 2018 4,348 1 View

Is the tissue extracted from a muscle biopsy replaced with muscle or scar tissue?

Following a bergstrom needle biopsy or a microbiopsy, the site of sampling has to regenerate the missing tissue. Is this new tissue muscle tissue or scar tissue? Are there any differences between...

25 July 2018 1,731 2 View

How many contractile proteins there are in each sarcomere ?

We know that muscle fibers are composed of myofibrils, and each one of those is a series of small contractile units called sarcomeres. Within each sarcomere, there are contractile proteins (actin...

29 July 2017 7,202 5 View