Ahmed Arafa

5 Questions 3 Answers 0 Followers

Questions related from Ahmed Arafa

How can I make a cubic spline curve using SAS?

I need SAS codes for cubic spline curves.

04 August 2022 6,625 1 View

How can I create a risk score from logistic regression?

I am creating a risk score from some variables using the following steps: 1- Dividing data into training and validation cohorts. 1- Logistic regression (unadjusted then fully adjusted). 2-...

06 March 2021 6,636 5 View

How can I assess the carryover effect in a crossover RCT?

I am doing a crossover RCT. I used between-subjects multiple measure ANOVA to assess the carryover effect. Is this OK? In this case, should I consider p-value

05 December 2020 6,290 3 View

I am doing a meta-analysis. One of the included studies is basically a pooling of other studies that are not published anywhere. Is that possible?

I am conducting a meta-analysis. The systematic review resulted in 5 eligible studies; of them, one study included a pooled analysis of 14 cohorts that were not published before. Is it possible to...

17 September 2020 6,814 6 View

How can I invert ORs and CIs?

I am working on a meta-analysis (physical inactivity and the risk of dysmenorrhea); So the calculated ORs physical inactivity/physical activity) yet, in some studies the ORs are calculated for...

17 December 2018 205 3 View