How can i operate kruskal wallis test for survey data in stata?

Hi, Please i m trying to compare medians of independant groups in the framework of epidemiological survey. I would like to know if there is a special command dedicated to pweight kruskal wallis...

08 September 2016 8,239 0 View

Use of weighted correlation?

09 October 2015 2,801 8 View

Where can I get data about immunoassay performances for salivary cortisol assay?

I want to assess the variability effect of salivary cortisol by immunoassay kits on diagnosis of cushing syndrome and other surrenal related pathologies.

31 December 2014 5,521 9 View

It is necessary to practice solvent and chromatography extraction to an accurate measure of salivary cortisol with immunoassay techniques?

When used the immunoassay method, several metabolites are able to interfere with salivary cortisol determination especially in sample from neonates, therapy replacement, oral prednisolone use...

10 November 2014 2,813 3 View

What type of resin should I use to extract iodine from biological samples (urine, serum)?

In our laboratory, we tried to measure iodine levels by ion selective electrodes. However, our direct assays were subject to interferences from other anions like fluorine, bromine. We would like...

03 April 2014 452 2 View

Interest of urinary matrix

Dear Pr Soldin, 1- What are the advantages of quantifying free thyroids in urine matrix? 2- which technique will be used for that purpose?

01 January 1970 3,047 4 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

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

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 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

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to quantitative analize the data of TNBS assay for gelatin?

Estemeed colleagues, I found some issues regarding the quantification of the data for TNBS assay. There are different protocols on how to perform that but it is clear to me the "fil rouge" that...

02 March 2021 2,616 1 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View