Hi dear friends I need a colleague in the validity and reliability of diagnostic tools dementia. Do anyone is interested in cooperation?

05 May 2015 0 8K Report

I need a colleague in the validity and reliability of diagnostic tools dementia in other country. especially countries have a lot of illiterate Elderly. Do anyone is interested in cooperation?

Badges
Science topic

More Sajjad Lotfi's questions See All

Who is informant informal caregiver for dementia or Alzheimer patient?

Hi dear friends Who is informant informal caregiver for dementia or Alzheimer patient? What criteria should be used to identify a informant informal caregiver? How long should someone take care of...

31 December 2017 3,325 2 View

How to write a good bibliometric study?

Hi Dear friend I'm interested to know how can write an excellent bibliometric study. I want to know: 1. What is the steps of a bibliometric study 2. What is the standard method for writing a good...

11 December 2016 3,640 1 View

How can compare the diagnostic accuracy of two or more screening test?

Today, there are many screening tests for a variety of diseases. Most of these tests are valid and reliable and for them calculated sensitivity, specificity, positive predictive value, negative...

07 August 2016 3,461 3 View

How to calculate the sample size in regression studies?

I am interested to know, How to calculate the sample size in regression studies? I have read the following article: Sample Size for Multiple Regression: Obtaining Regression Coefficients That Are...

05 June 2016 7,492 8 View

What is the difference between an age effect and cohort effect?

What is the difference between an age effect and cohort effect? and how we can we interpret them? please suggest me some article in this field. thanks

04 May 2016 201 2 View

Who is elderly?

Please answer this question without the use of scientific definitions (don't use WHO or UN or... definitions). I want to know who is elderly in your mind and what criteria you use to identify the...

04 May 2016 2,484 1 View

Hello fellow researcher .. What is the meaning of your name?

I would like to create a small guide containing the meanings of the names .. Thanks to everyone who cooperates with me in achieving it.

03 March 2021 5,266 4 View

What test should i use in comparing the correlation between categorical and continuous variables?

Dear all, I have the variable (Surgery duration) represented by values in minutes and the variable (preoperative neuropraxia cases) represented as (Yes/No) values. I want to compare these two...

03 March 2021 5,427 5 View

What is the most reliable source to get Impact factor of journals?

Source to get Impact factor of journals

01 March 2021 6,654 2 View

Which index or sites are reliable in determining of plant species?

There are many indexes when determining plant species: Plants of the World Online (POWO), International Plants Names Index (www.ipni.org), The Plant List (www.theplantlist.org) and others. But...

26 February 2021 3,404 10 View

Can the problems of overfitting be solved without cross validation?

For an overfit data set the cross validation error will be much bigger than the training error. Is it true or false?

23 February 2021 3,616 2 View

How do historians determine the credibility sources in modern history?

For a source to be considered reliable it must contain accurate historical information. But how does one determine the accuracy and reliability of sources in modern and recent history since not...

23 February 2021 1,346 13 View

How to manage western blot for proteomics data validation?

Hi Everyone, I am a bigginer in western blotting and I am trying to use it for validation of my proteomics data. I have: two regulated proteins with molecular mass of 40 and 73 kDa one control...

23 February 2021 6,671 4 View

Can anyone provide an advice on running a validation study of a commercially available product in collaboration with the manufacturer?

We are planning to run a study validating a commercially available product (i.e. software) and while we initially planned to do it independently of the manufacturer, they heard about our intention...

17 February 2021 2,295 3 View

How can we measure the reliability and validity of our survey questionnaire?

We are conducting survey research on COVID-19 misinformation among students. How can we validate our survey for it to produce valid and reliable data? Also, what statistical tools can we use to...

16 February 2021 678 3 View

What does the value 0.498 in reliability?

There are 6 television programmes of different TV genres and their mean and mean ranks are put for each of them. But the reliability value of all the programmes together is 0.498 . So what exactly...

15 February 2021 7,686 4 View