Spreadsheet addiction [Software]

posted by Shuanghe  – Spain, 2019-07-18 18:59  – Posting: # 20392
Views: 1,443

Dear all

» There is a series of papers about indirect adjusted comparisons in BE published by regulators. All done in Excel.

As far as I can tell, Excel and R give the same result. I was interested in the method so several weeks back I played with R using data from EPAR (none of the articles gives sample size of the BE study so without going to the EPAR for this additional information you can not reproduce/validate their results at all) and the difference in some comparison is 0.01% due to different rounding method used in Excel and R.

However, as Ohlbe said, there are some errors in the articles such as in the latest article (link), table 2 gives wrong data (I compared the original data from EPAR and it's clearly a mistake in article) but the result of the comparison using that data is correct, so this might just a typo. However, some comparisons were reversed, e.g., Table 3 describs generic 2 vs generic 4, and generic 3 vs generic 4, but in fact it were generic 4 vs 3 and 2, ... Apparently, someone typed the data in the wrong cell in excel so confidence interval were all reversed. :-D

» Semitransparent colors in Excel? I don’t think that’s possible. ;-)

Haha, this is where you err... :-D Actually you can do that in Excel (not that you should). At least I can in my 2013. It's ugly, but semi-transparent it is. :cool:

All the best,
Shuanghe

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