Simin Mahinrad

5 Questions 7 Answers 0 Followers

Questions related from Simin Mahinrad

How to include time-varying variables in linear regression analyses?

I need to perform a linear regression analysis in SPSS where: -the predictor is a continuous variable representing the SD of changes over time. -the outcome is a continuous variable measured at...

29 July 2019 5,832 6 View

What are the statistical tests for assessing the relation between changes in an exposure over time and an outcome?

My exposure is a continuous variable that has been measured at 9 follow-up examinations in each participant. My outcome is a also a continuous variable that has been measured only once: at the end...

07 August 2018 493 2 View

How to calculate "The Net Reclassification Index (NRI)" in SPSS?

I would like to analyse the additive predictive value of a biomarker over an old model in development of stroke using NRI. I was wondering: 1. Is it possible to calculate NRI in SPSS? 2. I know...

12 June 2016 5,327 3 View

Can anyone help with a question on heart rate variability and sinus arrhythmia?

I would like to know if it is valid to calculate the heart rate variability of a 70 years old subject with sinus arrhythmia? Thank you in advance

01 October 2014 3,882 12 View

Does anyone have experience with Multiple Regression?

I have an outcome divided in three categories and the determinant in tertiles, and I would like to perform a multiple regression analysis. Can you explain me please how to interpret and present...

20 August 2014 1,917 5 View