Problem with the export function

Delphine Bachelet – 2013/01/16

Stepwise process on Austria data (2013_11_28)

1. I drag and drop

2. I click on « Generate Summary Statistics »

1. I tick « Export (.TXT)

2. I click on Export Data

Around 3 minutes later

Then…• I down-load the file clinical_i2b2trans.txt from Guest-DataExport1008

(see slide 4) onto my computer• I open it using R:

The example of the Treat variableR code:

> head(X$PATIENT.ID)

[1] "100" "1000" "10001" "10003" "10004" "10007"

> head(X$X.Biomarkers.Test.Treat.)

[1] "Rebif44; Rebif44; Betaferon" "Rebif44; Rebif; Rebif; Rebif44; Rebif" "Tysabri" "Rebif44; Rebif44; Rebif44" "Betaferon"

[6] "Tysabri"

Meaning that

Patient « 100 » had Rebif44 for visit 1, Rebif44 for visit 2, Betaferon for visit 3

Patient « 1000 » had Rebif44 for visit 1, Rebif for visit 2, Rebif for visit 3, Rebif44 for visit 4, Rebif for visit 5,

Patient « 10001 » had Tysabri for visit 1

Patient « 10003 » had Rebif44 for visit 1, Rebif44 for visit 2, Rebif44 for visit 3

Patient « 10004 » had Betaferon for visit 1

Patient « 10007 » had Tysabri for visit 1

But according to TranSMART…

Only one variable « Treat » for all the visits. Why that?

According to TranSMART:

Patient ID R – visit 1 TranSMART – Visit 1

R – visit 2 TranSMART – Visit 2

R – visit 3 TranSMART – Visit 3

100 Rebif44 Betaferon Rebif44 Rebif44 Betaferon Rebif44

1000 Rebif44 Rebif Rebif Rebif Rebif Rebif

10001 Tysabri Tysabri

10003 Rebif44 Rebif44 Rebif44 Rebif44 Rebif44 Rebif44

10004 Betaferon Betaferon

10007 Tysabri Tysabri

Summary

…

…

Conclusion: The data from alphanumeric (categorical) variables of the exported file (clinical_i2b2trans.txt) are not correct and do not match with the data correctly displayed in the TranSMART grid view!