Tags · Evidence

confounding

A third variable explaining an apparent association.

48 topics 19 solved Group: Evidence

Research Methods 21 Evidence 16 Data & Tools 11

48 topics · page 1 of 2

Topic	Participants	Replies	Views	Activity
Cleaning a self-reported dataset and what you throw away — what changed since Data & Tools › Datasets observational data site feedback data table confounding Solved Posting this under the heading it deserves: Cleaning a self-reported dataset and what you throw away — what changed since Everything below is what sits behind that. Posting the method first, because I know…		2	2k	1h
About the N-of-1 designs category Research Methods › N-of-1 designs worked example confounding effect size Pinned Wiki Designing a personal experiment that could actually change your mind, including washouts and blinding. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is…		4	22k	14h
A structured critique template this community uses — a second dataset Evidence › Study critique observational data effect size confounding Solved On the subject in the title: A structured critique template this community uses — a second dataset Working notes rather than a conclusion. Session topic: SELECT ( N Engl J Med , 2023). Please read it before…	+47	51	16k	15h
Second pass at: Absence of evidence and evidence of absence Research Methods › Statistics worked example confounding number needed to treat On the subject in the title: Second pass at: Absence of evidence and evidence of absence Working notes rather than a conclusion. Session topic: SELECT ( N Engl J Med , 2023). Please read it before posting;…	+50	55	18k	16h
A critique that turned out to be unfair, retracted by its author Evidence › Study critique confounding risk of bias effect size observational data Wiki Posting this under the heading it deserves: A critique that turned out to be unfair, retracted by its author Everything below is what sits behind that. Session topic: SURMOUNT-4 ( JAMA , 2024). Please read it…	+34	38	20k	17h
Coming back to: A structured critique template this community uses Evidence › Study critique confounding risk of bias disputed observational data Posting this under the heading it deserves: A structured critique template this community uses Everything below is what sits behind that. Comparing STEP 8 ( JAMA , 2022) with SURMOUNT-1 ( N Engl J Med , 2022)…	+63	69	17k	18h
A community side-effect dataset, with its response rate and biases Data & Tools › Datasets confounding site feedback data table observational data Solved A community side-effect dataset, with its response rate and biases — setting out what I have, and where I think it stops being reliable. Posting the method first, because I know what the first three replies…		2	5.1k	19h
Immortal time bias in a claims-database study — one year on Evidence › Study critique effect size risk of bias confounding Solved Posting this under the heading it deserves: Immortal time bias in a claims-database study — one year on Everything below is what sits behind that. Comparing SURPASS-2 ( N Engl J Med , 2021) with SURMOUNT-1 (…	+41	46	3.7k	22h
Blinding yourself: practical methods and their limits — the long version Research Methods › N-of-1 designs worked example effect size confounding data table Blinding yourself: practical methods and their limits — the long version Writing it up because I had to work it out twice and would rather nobody else did. I have seen SURMOUNT-OSA ( N Engl J Med , 2024)…	+7	11	1.8k	22h
Selection into a registry and what it does to the estimate — a second dataset Evidence › Study critique confounding risk of bias effect size disputed Solved Posting this under the heading it deserves: Selection into a registry and what it does to the estimate — a second dataset Everything below is what sits behind that. Session topic: SURMOUNT-4 ( JAMA , 2024).…	+28	32	1.3k	1d
Cleaning a self-reported dataset and what you throw away Data & Tools › Datasets confounding site feedback data table observational data Cleaning a self-reported dataset and what you throw away — setting out what I have, and where I think it stops being reliable. A documentation question rather than an analytical one. I have a certificate in…		2	28k	1d
Washout with a one-week half-life: the arithmetic — does this still hold? Research Methods › N-of-1 designs confounding data table worked example Solved 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. Comparing SURPASS-2 ( N Engl J Med , 2021)…	+41	45	12k	1d
Blinding yourself: practical methods and their limits Research Methods › N-of-1 designs confounding data table effect size On the subject in the title: Blinding yourself: practical methods and their limits Working notes rather than a conclusion. Comparing PIONEER 6 ( N Engl J Med , 2019) with STEP 4 ( JAMA , 2021) and finding the…	+40	44	33k	5d
What a confidence interval means, from scratch Research Methods › Statistics number needed to treat confounding worked example heterogeneity What a confidence interval means, from scratch — that is the question, and I have not found it answered plainly anywhere I have looked. I have seen STEP 8 ( JAMA , 2022) cited in support of a claim I do not…		2	2.6k	2mo
Whether an aggregate is worth publishing at all: a disputed topic — does this still hold? Data & Tools › Datasets data table confounding observational data Solved Whether an aggregate is worth publishing at all: a disputed topic — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. I would like to understand…	+14	18	3.4k	2mo
Measurement error in home scales, with a worked standard deviation — the long version Research Methods › Statistics number needed to treat worked example heterogeneity effect size Solved On the subject in the title: Measurement error in home scales, with a worked standard deviation — the long version Working notes rather than a conclusion. Session topic: SURMOUNT-1 ( N Engl J Med , 2022).…	+96	105	2k	2mo
Pre-registering a personal experiment, seriously — a second dataset Research Methods › N-of-1 designs data table worked example confounding Posting this under the heading it deserves: Pre-registering a personal experiment, seriously — a second dataset Everything below is what sits behind that. I have seen STEP 8 ( JAMA , 2022) cited in support of…	+60	66	35k	3mo
An ABAB design with a data table and honest limitations — a second dataset Research Methods › N-of-1 designs confounding effect size data table worked example Solved On the subject in the title: An ABAB design with a data table and honest limitations — a second dataset Working notes rather than a conclusion. Session topic: STEP 2 ( Lancet , 2021). Please read it before…	+106	118	25k	4mo
Measurement error in home scales, with a worked standard deviation Research Methods › Statistics effect size heterogeneity number needed to treat confounding Solved Wiki Measurement error in home scales, with a worked standard deviation Writing it up because I had to work it out twice and would rather nobody else did. Comparing SURPASS-4 ( Lancet , 2021) with STEP 1 ( N Engl…	+26	31	4.3k	4mo
Contributing data without breaching anyone's privacy Data & Tools › Datasets data table confounding observational data Solved Contributing data without breaching anyone's privacy Writing it up because I had to work it out twice and would rather nobody else did. I would like to understand what this number means before I repeat it…	+65	71	839	5mo
Measurement error in a self-reported exposure Evidence › Study critique confounding risk of bias effect size disputed Solved Closed Posting this under the heading it deserves: Measurement error in a self-reported exposure Everything below is what sits behind that. Session topic: SURPASS-2 ( N Engl J Med , 2021). Please read it before…	+117	129	45k	5mo
An ABAB design with a data table and honest limitations Research Methods › N-of-1 designs effect size confounding worked example An ABAB design with a data table and honest limitations Writing it up because I had to work it out twice and would rather nobody else did. Session topic: SURPASS-4 ( Lancet , 2021). Please read it before…		2	45k	5mo
Designing a personal experiment that could change your mind Research Methods › N-of-1 designs confounding worked example data table effect size Posting this under the heading it deserves: Designing a personal experiment that could change your mind Everything below is what sits behind that. Session topic: STEP 8 ( JAMA , 2022). Please read it before…	+2	6	695	6mo
Measurement error in home scales, with a worked standard deviation — a second dataset Research Methods › Statistics effect size confounding heterogeneity number needed to treat Solved Measurement error in home scales, with a worked standard deviation — a second dataset — setting out what I have, and where I think it stops being reliable. Comparing FLOW ( N Engl J Med , 2024) with SURPASS-2…		2	13k	7mo
What a confidence interval means, from scratch — the long version Research Methods › Statistics effect size worked example confounding number needed to treat The question in the title: What a confidence interval means, from scratch — the long version I will give what I have already checked below so nobody repeats it. I have seen SURMOUNT-2 ( Lancet , 2023) cited…	+16	20	2.3k	8mo
Revisiting: Sample size in a voluntary survey: the selection problem Data & Tools › Datasets data table confounding site feedback observational data Solved Revisiting: Sample size in a voluntary survey: the selection problem — setting out what I have, and where I think it stops being reliable. Posting the method first, because I know what the first three replies…		2	56k	9mo
Coming back to: A community side-effect dataset, with its response rate and biases Data & Tools › Datasets observational data site feedback confounding data table On the subject in the title: A community side-effect dataset, with its response rate and biases Working notes rather than a conclusion. Posting the method first, because I know what the first three replies…	+27	31	46k	9mo
Reverse causation in a cohort study of weight and outcome — a second dataset Evidence › Study critique risk of bias observational data confounding Reverse causation in a cohort study of weight and outcome — a second dataset Writing it up because I had to work it out twice and would rather nobody else did. Session topic: SURMOUNT-OSA ( N Engl J Med ,…	+112	131	1.5k	10mo
Aggregated purity results across four services, with caveats — a second dataset Data & Tools › Datasets data table confounding site feedback observational data Closed Aggregated purity results across four services, with caveats — a second dataset — setting out what I have, and where I think it stops being reliable. Working through the identity arithmetic and I would like…	+127	151	42k	10mo
Criticising the method without criticising the authors — one year on Evidence › Study critique confounding effect size disputed risk of bias Solved Closed On the subject in the title: Criticising the method without criticising the authors — one year on Working notes rather than a conclusion. Session topic: STEP 2 ( Lancet , 2021). Please read it before posting;…	+16	20	61k	11mo

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