Aleksandar P. Medarevic

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Questions related from Aleksandar P. Medarevic

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?

01 January 2020 9,885 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...

11 November 2019 5,519 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)....

06 June 2019 2,569 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...

04 April 2019 7,237 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...

09 September 2017 539 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...

07 July 2017 1,500 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...

07 July 2017 1,561 7 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,...

07 July 2017 9,421 0 View

Can someone explain me difference between one-step and two-step meta analysis with individual patient data?

What are we doing in one-step, and what in two-step?

05 May 2016 5,403 2 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

04 April 2016 5,262 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?

Rates, after and before intervention. Should I use standardized infection ratios (SIR), because it's infection disease.

01 January 2016 9,058 10 View

R without matematics

Statistics is essential in science. There are plenty of, so called ''bio-statistical'' books, that combine statistical methodology and using some software package (SPSS, SAS, R...). Feel free to...

01 January 1970 2,981 2 View

Ideas for meta-analysis in public health

Dear all, please be free to list some interesting topics for meta-analysis. All aspects of public health are welcome.

01 January 1970 8,150 10 View

Heteroscedasticity linear regression

Hi, folks. Could you help me, how to interpret regression results when heteroscedasticity could not be rejected by Breusch–Pagan test? Thank you in advance. Aleksandar

01 January 1970 6,498 7 View

Steroids and health

Last year, BBC made about using steroids among gym users, called it "Steroid Nation". Same year, Men's Health wrote about ''Britain's Steroid Epidemic". What is your personal opinion about...

01 January 1970 9,345 35 View