Seyyed Amir Yasin Ahmadi

19 Questions 129 Answers 0 Followers

Questions related from Seyyed Amir Yasin Ahmadi

What is the alternative name for hazard ratio when we have success event instead of failure?

What is the alternative name for hazard ratio when we have success event instead of failure? Can we use inverse hazards ratio?

26 December 2024 7,339 3 View

How to install a shiny app?

For example, I want to install the app "01_hello" as an independent app (like many other apps of windows). Please find the attached screen. But after playing the app, I run into error.

23 May 2024 1,175 2 View

How to use stata variables in PyStata?

I want to run python codes on the current variables of Stata using PyStata. For example: set obs 5 gen a = _n python a end But python does not recognize "a". Instead I should run: python a = [1,...

13 December 2023 7,349 8 View

How can I run a for loop for statistical functions in R?

I want to repeat a statistical function (like -lm-, -glm- or -glmgee-) for a lot of variables. But, it does not work for statistical functions (example 1) but works for simple functions (example...

14 November 2023 475 5 View

Problem to read headers in R, column names are converted to "na.xx", what should I do?

I want to open a dataset of gene-trait association using: data = read.table(file.choose(), header = T) attach(data) View(data) But instead of column name (510 traits), these headers are shown:...

15 October 2023 8,225 6 View

Is it possible to design a graphical and interactive application as an output of R programming?

I am looking for a graphical tool like visual basic software to define R codes for interactive graphical buttons and text boxes. For example, I want to design a windows application with graphical...

10 August 2023 8,453 5 View

How to create ID for countries in Stata?

Dear all, I have a panel dataset consisting of string names of countries. I want to generate specific ID for each country. E.g. Country...

09 October 2022 723 4 View

Looking for a stata syntax for a loop?

Hi, I Have repeated IDs of observations. I want to repeat the result of each cell value of a column in the other cells of that column if the ID is same. For example: replace var11 = 1 if...

15 September 2020 9,750 8 View

How to make a previous text selectable on a picture in photoshop?

In some papers, the texts of the figures are selectable by mouse. How the journals do this? How can I do this in adobe photoshop? In which file type should I save?

11 June 2020 9,923 0 View

What is the difference in using of ROC curve and sigmoid logistic regression?

This question is for knowing the opinions of yours. I know that it does not have a constant answer. What is the difference in using of ROC curve and sigmoid logistic regression? I mean...

30 April 2020 2,169 8 View

What are IDs of counries in spmap commad of stata?

I use bellow command. For variable ID, I don't know which id belongs to which country. spmap our_value_for_each_country_here using "coord_mercator_world.dta", id(id_of_the_countries_here)...

27 March 2020 1,936 0 View

How can I perform multivariate logistic regresion at 2 layers in stata?

I want to use multivariate logistic regression for disease association (binary outcome) of HLA genes. I want to control effect of coexisting alleles of ethnicity haplotypes. Imagine that I have...

17 March 2020 3,875 5 View

Reference odds ratio (OR=1) for logistic regression in stata?

Does anybody no how can I choose one of my independent variables of logistic regression as variable with OR=1? I cannot find "reference variable" in dialog boxes of Stata. Is it the same with...

19 July 2019 2,087 3 View

Do you agree with this design of SPSS? Is ANOVA a mean comparison test?!

Of course, I think that SPSS is a very good software for ANOVA family (in general linear model menu). There is another copy for one way ANOVA in the menu you see. Do you agree? Can comparison of...

01 January 1970 7,096 18 View

What is your idea about area under logistic curve? Is it useful?

Imagine that your predictor is age ranged from 0-100. Your coefficient is 2. You want to compare your coefficients with 1 as a classical logistic function. Your classical function is...

01 January 1970 3,345 4 View

Is it common to use continuity correction toward our hypothesis instead of toward punishment?

Dear all, I want to know your opinions Also, there is good paper here Critical review and comparison of continuity correction meth... Also,...

01 January 1970 985 5 View

Is it scientifically possible to use place (etc.) as the repeated measure variable of GEE instead of time?

For example, repeating measurement, - in right and left hands - in face, hand and foot - by different practitioners * if there is a logical ranking for such conditions (e.g. measuring by Prof...

01 January 1970 9,589 4 View

How to convert simulated normal data to bernoulli distributed data in Stata?

I am using -corr2data- to simulated raw data from a correlation matrix. However, some variables that I need should be binary. How can I convert? Is it possible to convert higher amounts to 1 (and...

01 January 1970 3,170 8 View

Using logistic regression to calculate adjusted attributable risk!

What is your idea? Is it possible to act as below? odds ratio = (p2/(1-P2)/(P1/(1-P1) if: we want risk diff (i.e. P2-P1=P) then: odds ratio = P/(1-P) if: having odds ratio from logistic...

01 January 1970 8,586 5 View