Is there a validated Swedish, Norweigan or Danish version of the International Index of Erectile Dysfunction (IEEF5)?

The IEEF-5 is transalted and validated for several languages, but I have not found a validated version from Scandinavia. Grateful for information regarding this questionnaire and its usability,...

06 July 2018 3,643 0 View

What is the optimal procedure for testing pragmatic validity of instruments after translation?

To ensure that translated instruments have a pragmatic validity and thus will be both used and and that the results will be of interest to clinical practice, my question regards the optimal...

02 March 2018 9,344 7 View

Are there questionnaires measuring self-efficacy and trust for patients and professionls?

I am looking for reliable and valid questionnaires to measure self-efficacy among health care professionals and also among patients (preferably with chronic diseases, but also for questionnaires...

11 December 2017 9,042 0 View

Is there any scientific methodology written on "trichotomization"?

In quality reports regarding school results etc it is common to use a 10 point numeric scale and then trichotomizing the results into three categories from the original ten categories, when...

10 November 2015 1,803 5 View

What would you cobnsider to be the lowest accptable reasponse rate concerning online-questionnaires?

04 May 2015 6,445 3 View

What is the correct sample size when performing av explorative factor analysis for construct validity in a psychometric study?

In the literature that I have found so far, the answers to this question is varied and I am interested in a getting a clearer picture and recommendations.

08 September 2014 5,463 19 View

Can an exploratory factor analys from an original psychometric testing of an instrument be used in a confirmatory factor analysis in a new language?

Can an exploratory factor analys from an original psychometric testing of an instrument be used in a confirmatory factor analysis in a new language, i.e. when translating, adapting and testing the...

08 September 2014 4,015 4 View

Which is preferable for a scale in a questionnare, 3 or 5 options for answers?

In adapting a questionnaire with the options "agree", "uncertain", "disagree", my questions is if it would be preferable to include the options of "Partially agree" and "partially disagree". What...

08 September 2014 1,867 13 View

Can a questionnaire be considered valid, if the researcher has used pragmatic validity testing in several steps?

The questionnaire covers work related health from the perspective of the worker, the organization and the management investigated from the physical, psychological and environmental view. The...

06 July 2014 5,289 2 View

Why do you use Researchgate and what is your perceived value of using Researchgate?

01 January 1970 8,501 4 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

No title

Hi, I have several doubts about one paper (Systematic Literature Review) that was rejected. The main topic is Single-Board Computers in engineering education during the period 2010-2020. The...

01 March 2021 9,015 3 View

How to figure out easily the right journal with the right scope for your paper?

According to my experience most of the selected journals during paper submission are based on journal text matching suggested results from Springer, Elsevier,,,Etc. then the manuscript happened to...

01 March 2021 1,786 3 View

Which software is better to write systematic review paper?

We have seen some authors use some software to write review paper. As obvious, the study of all published papers concerning our studying field is not possible and these software can help us to...

27 February 2021 6,296 1 View

Centrality measures computation in Biblioshiny/ Vosviewer?

26 February 2021 7,279 2 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Are there methods for automatically mapping floodplains, fans and terraces?

I want to map these river geoforms with as little subjectivity as possible. I have a high resolution DEM generated by drone data.

22 February 2021 7,800 3 View

Do I need to introduce HFD to ob/ob mice to obtain a T2DM model?

I am planning to work on T2 diabetic animals and check the efficacy of probiotics. My initial plan is to fed B6 animals with HFD for a while. But now, I have the chance to work on ob/ob mice. My...

18 February 2021 6,896 3 View