Simar and Wilson or Fractional regression in the second stage of DEA?

The question is in the title. Could you give me resons for using one of them in my second stage DEA analysis?

31 December 2019 9,787 3 View

Fractional regression or Double-Bootstrapped Truncated Regression in the second stage of DEA?

Dear all, I used those two types of regression to estimate effects of environment factors on hospital efficiency. However, they gave me opposite results. For instance, in FR percentage of people...

10 November 2019 5,416 3 View

Atkinson index for grouped data?

I am struggling with measuring inequality in health-workforce between regions based on number of workers in each region and region population using Atkinson index (spreadsheet is in attachment)....

05 June 2019 2,436 5 View

GINI coefficient EXCEL/R/SPSS?

Dear colleagues, do you have some EXCEL template for calculate GINI coefficient and create Lorenzo curve? I find some R packages but I am not sure how to use it on my date with population and...

03 April 2019 7,147 1 View

Radnom sample froms survey data?

Using survey data, I planed to make log regression. Original sample size is 2000 and there are obaut 10% cases with outcome and 90% withoit it. May I chose amongst thant 90% random sample matced...

08 September 2017 460 1 View

Joinpoint Age

Joinpoint software can calcualte age-adjusted mortality rates from your data. Mora about that on https://surveillance.cancer.gov/joinpoint/age.html That is simple, but do you know how to analyze...

06 July 2017 1,404 0 View

Joinpoint- Model selection method

I am using Joinpoint for trend analysis of age-adjusted mortality rates. Can you help me what method to use: Permutation test or Bayesian Information Criterion? What are the reasons for the first,...

06 July 2017 9,295 0 View

''Average'' mortality rate?

This is a bit silly question. How to calculate "average'' age-adjusted mortality rate for 15-year period of time if I have age-adjusted mortality rate for every specific year? Second question is...

06 July 2017 1,466 7 View

Homogeneity of variance is one of assumption for Repeated Measures ANOVA. How to test it? Is the Mauchly's is enough or should I use Box's test,too?

I think, in both tests, p-value must be >.05

03 April 2016 5,183 5 View

I'd like to compare incidence rates same population in two years, but I don't how to do it. Should I use t-test,or I should use incidence rate ratio?

31 December 2015 8,972 10 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

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

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

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