Sample size in n-of-1: you are the sample. Repeated measurements (weekly weighings, daily mood scores) increase the power to detect a real effect even though n=1.
The conclusion is tentative; the arithmetic underneath it is not.
Sample size in n-of-1: you are the sample. Repeated measurements (weekly weighings, daily mood scores) increase the power to detect a real effect even though n=1.
The conclusion is tentative; the arithmetic underneath it is not.
The best thing about this subcategory is that people post their protocols before their results. That order is what keeps it honest.
Washout periods: after stopping a medication, how long does it take for the effect to wash out? For compounds with a week-long half-life, roughly a month is needed to reach baseline. Using that washout period in a before-after design strengthens the inference.
That is my reading. Someone else read the same page differently and was reasonable.
Read the full topic (12 posts)
| Topic | Participants | Replies | Views | Activity |
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Designing a personal experiment that could change your mind
Posting this under the heading it deserves: Designing a personal experiment that could change your mind Everything below is what sits behind that. I was wrong about designing a personal experiment in a thread…
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+2 | 6 | 695 | 6mo |
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Pre-registering a personal experiment, seriously
Pre-registering a personal experiment, seriously — setting out what I have, and where I think it stops being reliable. A narrow question about pre-registering a personal experiment, deliberately narrow,…
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+96 | 119 | 58k | 14mo |
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Washout with a one-week half-life: the arithmetic — does this still hold?
Washout with a one-week half-life: the arithmetic — does this still hold? — that is the question, and I have not found it answered plainly anywhere I have looked. Washout: setting out the arithmetic in full,…
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+41 | 45 | 12k | 1d |
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Pre-registering a personal experiment, seriously — a second dataset
Posting this under the heading it deserves: Pre-registering a personal experiment, seriously — a second dataset Everything below is what sits behind that. Posting a small dataset on Pre-registering a personal…
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+60 | 66 | 35k | 3mo |
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An ABAB design with a data table and honest limitations — a second dataset
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+106 | 118 | 25k | 4mo |
| Topic | Participants | Replies | Views | Activity |
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Comparing my trajectory with the trial curves, carefully — a second dataset
Comparing my trajectory with the trial curves, carefully — a second dataset — setting out what I have, and where I think it stops being reliable. Maintenance rather than loss, which is the part of this that…
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+77 | 81 | 16k | 11h |
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How to ask a question when you cannot say why you are asking it
Asking directly, because I could not find a straight answer: How to ask a question when you cannot say why you are asking it Question in the title. Context below, and I have tried to include the things people…
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+49 | 53 | 36k | 4h |
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An 18-month record including the parts that went badly
An 18-month record including the parts that went badly — setting out what I have, and where I think it stops being reliable. Asking about 18-month record on behalf of the question I keep seeing asked badly,…
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+77 | 81 | 17k | 12h |
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Sample size in a voluntary survey: the selection problem
Posting this under the heading it deserves: Sample size in a voluntary survey: the selection problem Everything below is what sits behind that. Sample size: setting out the arithmetic in full, because I have…
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+1 | 5 | 12k | 15mo |
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[2026 update] Amylin and gastric emptying: overlapping mechanisms with incretins
Amylin and gastric emptying: overlapping mechanisms with incretins — setting out what I have, and where I think it stops being reliable. A question about Amylin and gastric emptying that I think has a…
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+21 | 25 | 44k | 5mo |