Marta Sandini

4 Questions 4 Answers 0 Followers

Questions related from Marta Sandini

Long-to-wide with missing data...any help?

Hi! I am handling with multiple measurements at different time points and I want to transpose the dataset so that each measurement will be a variable and each subject would correspond to a single...

24 July 2019 8,676 3 View

How can I calculate Harrell's C for a proportional hazards model with SPSS?

Hello everybody! I've run a cox proportional hazards model for survival analysis in a cohort of pancreatic cancer patients with SPSS v. 25 and I want to 1. compare the accuracy (with the...

12 January 2019 753 3 View

Comparing differences in proportions after treatment between 2 subgroups. Any suggestions?

Hello everybody! I'm looking for a statistical test to compare the reduction in adverse outcomes after treatment between two groups...any suggestions? (to make it easier, imagine I administered a...

13 August 2018 4,813 7 View

Volume assessment Osirix-lite..is it possible?

Maybe someone could help me..I need to measure adipose tissue and lean mass at CT scan. I downloaded Osirix-lite, but when I try to use the plug in for segmentation the program closes. Could you...

14 February 2017 7,556 3 View