Timeline for Placebo Tests: Is it okay to create a placebo treatment group from a random sample of the control group?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 21, 2019 at 14:11 | vote | accept | user9903833 | ||
| Jan 8, 2019 at 22:24 | comment | added | Ben | Just to be clear, have you collected your data yet? (It is not clear from your description of the problem.) So can you actually re-allocate subjects to other groups for purposes of the experiment, or is it too late for this? | |
| Dec 14, 2018 at 19:19 | answer | added | dimitriy | timeline score: 2 | |
| Dec 14, 2018 at 19:17 | comment | added | user158565 | Unnecessary to create a placebo group. If treated group and untreated group are comparable, then just compare two groups directly. If not comparable, creating a placebo group randomly from untreated group cannot resolve the incomparable problem. | |
| Dec 14, 2018 at 19:16 | history | edited | user9903833 | CC BY-SA 4.0 |
added 34 characters in body
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| Dec 14, 2018 at 19:13 | comment | added | user9903833 | just to clarify when I say control group what I mean is the group of untreated individual. | |
| Dec 14, 2018 at 19:13 | answer | added | Nuclear Hoagie | timeline score: 1 | |
| Dec 14, 2018 at 19:10 | comment | added | user158565 | You have 3 groups: treated, untreated, and control. | |
| Dec 14, 2018 at 19:04 | history | asked | user9903833 | CC BY-SA 4.0 |