Where to use absolute and relative precision in sample size calculation?

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Which is the best software to visualise proportional odds derived by ordinal regression?

I have an ordinal regression model and I would like to depict the proportional odds graphically. Can somebody please help me regarding the best software to do it? Can I do it with jmp?

01 February 2019 3,204 3 View

How to draw a fitline in the scatter plot made by Graphboard Template Chooser in SPSS?

We have prepared a scatter plot with two continuous variables using Graphboard Template Chooser in SPSS. We have tried to arrange the size of dots and add data labels. However, we cannot add the...

05 June 2018 3,312 3 View

How to do Poisson regression in SPSS?

I am analyzing a data set in which the outcome variable is with count data with large variance, the maximum of which is 84751821 and the minimum is 1. The predictor variables are continuous in...

02 March 2018 5,090 3 View

How to interpret and report ordinal logistic regression in STATA?

I have a dataset with an ordinal outcome variable (3 categories) and a few inary predictor variables. I have run the ologit command in STATA and in response got coefficients and p value for each...

09 October 2017 3,036 3 View

How to deal with outliers in SPSS?

I have a SPSS dataset in which I detected some significant outliers. The outliers were detected by boxplot and 5% trimmed mean. How do I deal with these outliers before doing linear regression?...

07 August 2017 4,918 7 View

Career aspiration scale among school students

We are planning to do a study to find out the effect of sociodemographic background, school-related factors, social and parental support on the educational and professional aspirations of high...

04 May 2017 8,379 4 View

How can we implement competency based medical education in community medicine?

As we all know, way of teaching and learning medical science is rapidly changing. The recent focus is on Competency based medical education. My question is how do we implement competency based...

02 March 2017 6,007 4 View

What is the underlying difference between an analytical cross-sectional study and a case- control study?

Both studies start with a control group and try to find out the association between cause and effect. So where does the difference lie?

31 December 2016 9,657 3 View

What is the basic difference between a nested case control, a retrospective cohort and a case cohort study?

Your toughest technical questions will likely get answered within 48 hours on ResearchGate, the professional network for scientists.

31 December 2016 8,717 0 View

How to draw a smooth curve in SPSS?

We have drawn ROC curve using SPSS. However, the ROC curves were not smooth. Does anyone know how to smoothen a ROC curve using SPSS?

11 December 2016 8,964 5 View

Which distribution type should I use when calculating the average particle size from TEM image? and how to calculate the error ?

average particle size calculation from TEM

04 August 2024 2,921 1 View

How to calculate effect size of AMCE (Average Marginal Component Effect) in Randomized Conjoint Experiment?

I am following Hainmueller, Hopkins, and Yamamoto's (2014) paper for my randomized conjoint experimental data analysis. The link to the paper is provided below. I received a comment from the...

02 August 2024 4,406 0 View

How to conduct a sensitivity power analysis for Kendall's Tau?

Is there a straightforward way to conduct a sensitivity power analysis for a Kendall's Tau correlation? I was considering using the sensitivity setting and "Correlation: point biserial model" test...

28 July 2024 6,133 8 View

How to estimate sample size for GWAS of continuous and discrete traits? What are the pre-requisites?

Genome-wide association study (GWAS) Continuous traits: eg. Height Discrete traits: eg. Eye color

28 July 2024 286 0 View

What is the best method for removing paraffin from plant samples prepared for microtome?

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24 July 2024 3,087 3 View

How many samples size should I select to compare both groups?

I want to study the differences between two groups: the treatment group and the comparison group. The total population consists of 60000 women in the treatment group, distributed across different...

21 July 2024 669 3 View

How to bring baseline to zero for an absorbance data for chromatogram?

I forgot to autozero during the run (Size exclusion chromatography.) and later i realised i forgot to do that and the baseline was not zero but below zero (and in some cases it above zero). I...

15 July 2024 5,551 6 View

How to identify a monomeric protein species of the target without running the molecular weight standard on SEC?

I was using Superose6 10/300 Gl column for purification of my target protein. the sample consists of various oligomeric state and i would like to identify the approximate elution volume where my...

15 July 2024 5,157 2 View

How to calculate Cohen's d from CI 95 and t value from a paired sample t test?

We have conducted a systematic review to investigate the effectiveness of a treatment for a psychological disorder. We aim to report effect sizes and p values of the reviewed studies but one study...

10 July 2024 7,186 4 View

Is VSM measurment of NdFeB alloy powder sample require any spesific sample preparation ?

Is any specific sample preparation required to perform VSM measurement of NdFeB alloy powder to get a square-shaped M-H loop? Or is it mandatory to make magnetically aligned and sintered pellets...

09 July 2024 1,969 0 View