[R] MICE passive imputation formula

2018-05-23 Thread A.C. van der Burgh
Hi all, I have a question about multiple imputation within the MICE package. I want to use passive imputation for my variable called X, because it is calculated out of multiple variables, namely Y, Z. Let's give an example with BMI. I know, that if I want to use passive imputation for BMI, I ca

[R] CKD-Epi formula

2018-05-23 Thread A.C. van der Burgh
Hi all, I have a question and I do not know If I am at the right place to ask this question. But is there someone that has the formula of CKD-Epi in code in R? I have tried a lot of loops, but none of the approaches give me the right answer. Is there someone who has this formula coded? Thank yo

Re: [R] Nelson-Aalen Estimator in R: Error Message

2018-05-22 Thread A.C. van der Burgh
Maybe this information can help a little more to get an idea of the data. -Original Message- From: peter dalgaard [mailto:pda...@gmail.com] Sent: dinsdag 22 mei 2018 17:03 To: A.C. van der Burgh Cc: r-help@r-project.org Subject: Re: [R] Nelson-Aalen Estimator in R: Error Message Hard to tell fro

[R] Nelson-Aalen Estimator in R: Error Message

2018-05-22 Thread A.C. van der Burgh
Dear all, Currently, I am doing a research project about serum sodium levels and falling. I am doing my analysis in R. I am performing the multiple imputation right now. I want to perform a survival analysis later, but therefore I need to specify the Nelson-Aalen estimator. My dataset is called