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 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

I want to analyze WHO STEPS data in SPSS. Once variables are entered in SPSS how do I connect them with the *.sys files from WHO?

I gathered data using the WHO STEPS instrument STEPS 1 & 2. The Epi Info files supplied on the WHO STEPS site for analysis appear sketchy or incomplete. There appears to be a complete set of *.sys...

04 August 2013 8,525 1 View

How can I measure MMP-1 protein activity or protein level from liver tissue?

Instead of checking only the mRNA level, I want to check the active protein level of MMP-1 in Liver tissue from mice. How can I do that?

03 March 2021 1,763 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View