ANCOVA controlling baseline in RCT - how to perform power analysis and sample size estimation?

Hi, I have a simple question. I am hoping to perform a power analysis/sample size estimation for an RCT. We will be controlling for baseline symptoms, and using post-treatment or change scores as...

19 February 2021 2,648 23 View

Is MAXQDA a good choice for coding qualitative research?

Hello all! I am currently a PhD candidate in the middle of the data collection phase of my dissertation research. I have begun to look ahead to data analysis. To provide some background...

29 June 2020 3,474 3 View

What are the positive and negative effects of the COVID19 on university education administration?

Universities exist to provide three main services,namely: Teaching, Research and Knowledge transfer to the industry/community. With outbreak of the pandemic which has grossly impacted economies,...

01 June 2020 481 17 View

How can I approach the topic of DMN and combine it with LegalTech?

Hello! I am currently working on a project to bring automation into the legal field. As decisions must be based on various variables and be made in accordance with legal codes, information systems...

01 April 2020 3,942 3 View

How do i obtain/request sequencing and other data from chemo-resistant breast cancer patients?

Hi all, I was wondering how to go about obtaining highthroughput seq data from databanks. We are interested in the expression of a few genes we believe might regulate acquired chemoresistance. I'm...

11 February 2019 8,919 2 View

How do you properly clean a black 96 well plate for reuse in fluorescence reading (Poly Sorp Nunc flat btm wells, 12 mm well depth)?

Fluorescence quantification by plate reader

04 March 2018 7,230 13 View

What's the best method of collecting, temporary keeping and shipping blood samples for serum preparation and whole blood DNA extraction?

16 February 2017 3,608 3 View

Is there anybody who has examined conflict and frustration among unwed adolescent mothers in Africa?

I am interested in looking at conflict and frustration among unwed mothers in sub saharan Africa.

07 November 2015 9,010 1 View

How can I assess reliability and validity of a qualitative research questionnaire?

I am designing a research questionnaire on the experiences of adults learning numeracy. To assess the reliability and validity of my questionnaire I woul like to see a copy of a similar instrument...

15 December 2014 1,368 7 View

What are some recommendations for bacteriophage and euk. virus precipitation?

I'd like to precipitate and enrich for viruses from human samples (BAL, stool, serum, etc.) for metagenomic sequencing. Enrichment is pretty key for some sample types in order to get sufficient...

28 May 2014 2,060 3 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

Is anyone working on a project focused on immigrants/newcomers working in the hospitality industry and how they have been impacted by COVID?

The on-going Covid-19 pandemic has had devastating economic effects on many industries. However, few have suffered to the same extent as full-service restaurants. Numerous studies have shown that...

24 February 2021 9,496 4 View

Alternative to mediation analysis?

I am currently working on my dissertation and want to explore the role of competence as a mediator between the effect of colour of clothes on voting intention (focus on Western countries)....

21 February 2021 8,609 1 View

How COVID-19 has affected mental health?

The pandemic has led to depression and anxiety and its negative effects shouldn't be ignored. However, it has also led some people to become more resilient! What do you think? Thank you.

21 February 2021 4,733 19 View

What is the most prevalent drug related problem in the developed countries?

Detecting the drug related problems is an important step in the pharmaceutical care plan

21 February 2021 5,421 3 View

Where can I find raw quantitative datasets on ecosystem services?

I'm an Undergraduate student on the search for a research topic which has to involve any ecosystem service(s) and a response to environmental change. I'm looking for raw quantitative data sets (I...

19 February 2021 5,911 2 View

Can medicinal plants really play an inherent rule in the COVID-19 tackle?

Numerous scientific reports cited plant extracts with potential antiviral activity and even anti-COVID-19? Why these findings are neglected? I remember very well the warning released by the WHO to...

17 February 2021 2,141 9 View

How can I interpret a ratio variable?

Dear colleagues, I am running a regression in which I have the following regression FoodExp = 67.04 DepRatio +.....e My interest is in the interpretation of the coefficient on the dependency...

16 February 2021 2,058 2 View

Patients with chronic kidney disease could get COVID-19 vaccine?

04 February 2021 278 4 View

Can anyone help to convert ODK XLS into XML?

We want to conduct a verbal autopsy using WHO adult VA updated tools in ODK. The current version of WHO adult verbal autopsy tools is v1.5.3. I have successfully converted VA ODK-XLS v1.4 into XML...

03 February 2021 844 2 View