Intersection · Outcomes × DXA

Outcomes topics tagged DXA

Topics in Outcomes carrying the tag DXA. Dual-energy X-ray absorptiometry and its real precision.

30 topics

Topic	Participants	Replies	Views	Activity
A 40-week log with the measurement method stated — what changed since effect size data table DXA long read Solved A 40-week log with the measurement method stated — what changed since Writing it up because I had to work it out twice and would rather nobody else did. Posting a small dataset on 40-week log. It is mine, it…	+9	13	2.1k	9h
Seven-day rolling means and why weekly readings mislead data table DXA effect size long read Seven-day rolling means and why weekly readings mislead Writing it up because I had to work it out twice and would rather nobody else did. Posting a series rather than a conclusion, with the method first.…	+109	125	42k	10h
An 18-month record including the parts that went badly data table long read effect size DXA 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,…	+77	81	17k	12h
Lean mass preservation: what the evidence supports — does this still hold? bioimpedance lean mass loss data table DXA Asking directly, because I could not find a straight answer: Lean mass preservation: what the evidence supports — does this still hold? What changes if the standard account of Lean mass preservation is wrong?…	+112	122	5.2k	20h
[2026 update] Waist circumference technique and its repeatability DXA long read effect size data table Posting this under the heading it deserves: Waist circumference technique and its repeatability Everything below is what sits behind that. An honest uncertainty about Waist circumference technique rather than…	+23	27	5.9k	21h
Ultrasound and skinfolds: operator dependence in practice DXA data table lean mass loss Ultrasound and skinfolds: operator dependence in practice — setting out what I have, and where I think it stops being reliable. Trying to establish the boundary conditions on ultrasound and skinfolds. The…	+72	76	2.7k	2d
Bioimpedance and hydration: why the number moves lean mass loss data table DXA bioimpedance Bioimpedance and hydration: why the number moves — setting out what I have, and where I think it stops being reliable. I have spent a fortnight trying to pin bioimpedance and hydration down and I want to set…	+62	70	13k	23d
Follow-up: Interpreting a composition change that is within the error bars DXA lean mass loss bioimpedance data table Solved Interpreting a composition change that is within the error bars Writing it up because I had to work it out twice and would rather nobody else did. Asking about Interpreting a composition change directly,…		2	95	24d
Revisiting: Bioimpedance and hydration: why the number moves data table DXA bioimpedance Solved Posting this under the heading it deserves: Revisiting: Bioimpedance and hydration: why the number moves Everything below is what sits behind that. I have spent a fortnight trying to pin Bioimpedance and…		2	2.8k	1mo
A 40-week log with the measurement method stated — does this still hold? effect size DXA data table Solved A 40-week log with the measurement method stated — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Posting a small dataset on 40-week log. It is…	+1	5	14k	2mo
Two scans six weeks apart on different machines: a cautionary tale lean mass loss data table bioimpedance DXA Solved On the subject in the title: Two scans six weeks apart on different machines: a cautionary tale Working notes rather than a conclusion. A question about measurement precision rather than about physiology. Two…	+18	26	9.4k	2mo
Ultrasound and skinfolds: operator dependence in practice — what changed since data table DXA bioimpedance lean mass loss Posting this under the heading it deserves: Ultrasound and skinfolds: operator dependence in practice — what changed since Everything below is what sits behind that. What changes if the standard account of…	+32	37	7.4k	3mo
A plateau that disappeared when I changed how I measured DXA long read effect size Posting this under the heading it deserves: A plateau that disappeared when I changed how I measured Everything below is what sits behind that. I was wrong about plateau in a thread last spring and I would…	+27	31	7.2k	3mo
Second pass at: Circumference measurements as a poor man's composition estimate DXA lean mass loss data table Second pass at: Circumference measurements as a poor man's composition estimate — setting out what I have, and where I think it stops being reliable. Two things I would like separated before anyone answers on…	+64	68	13k	4mo
Waist circumference technique and its repeatability data table long read effect size DXA Waist circumference technique and its repeatability — setting out what I have, and where I think it stops being reliable. I have spent a fortnight trying to pin waist circumference technique down and I want…	+55	60	11k	5mo
What I would record differently if I started again DXA long read data table effect size Closed Asking directly, because I could not find a straight answer: What I would record differently if I started again Asking about the phase almost nobody writes about. The material here on losing is good. The…		2	12k	5mo
Seven-day rolling means and why weekly readings mislead — one year on DXA data table long read Solved On the subject in the title: Seven-day rolling means and why weekly readings mislead — one year on Working notes rather than a conclusion. Asking about Seven-day rolling directly, because I have read four…	+78	88	16k	5mo
What I would record differently if I started again — the long version effect size data table DXA Solved Closed What I would record differently if I started again — the long version I have a specific reason for asking rather than idle curiosity, and the context is below. Asking about the phase almost nobody writes…	+22	26	57k	5mo
Comparing my trajectory with the trial curves, carefully DXA effect size long read data table Solved Posting this under the heading it deserves: Comparing my trajectory with the trial curves, carefully Everything below is what sits behind that. Maintenance rather than loss, which is the part of this that…	+86	92	54k	7mo
DXA precision and the least significant change for lean mass bioimpedance data table DXA Closed Posting this under the heading it deserves: DXA precision and the least significant change for lean mass Everything below is what sits behind that. A question about measurement precision rather than about…	+81	85	2.7k	7mo
[2026 update] Reporting a disappointing outcome, and why it belongs here DXA long read data table Pinned Closed On the subject in the title: Reporting a disappointing outcome, and why it belongs here Working notes rather than a conclusion. Proposing that Reporting a disappointing outcome deserves a maintained page…		2	11k	8mo
Second pass at: Two scans six weeks apart on different machines: a cautionary tale DXA bioimpedance lean mass loss data table Second pass at: Two scans six weeks apart on different machines: a cautionary tale Writing it up because I had to work it out twice and would rather nobody else did. A question about measurement precision…	+1	5	34k	8mo
A 40-week log with the measurement method stated DXA long read data table On the subject in the title: A 40-week log with the measurement method stated Working notes rather than a conclusion. Asking about 40-week log directly, because I have read four threads on it and each…	+87	97	18k	9mo
Reporting a disappointing outcome, and why it belongs here data table DXA effect size Closed Reporting a disappointing outcome, and why it belongs here Writing it up because I had to work it out twice and would rather nobody else did. Proposing that reporting a disappointing outcome deserves a…	+21	29	62k	10mo
DXA precision and the least significant change for lean mass — what changed since DXA data table lean mass loss bioimpedance Solved DXA precision and the least significant change for lean mass — what changed since — setting out what I have, and where I think it stops being reliable. A question about measurement precision rather than about…		2	56k	11mo
Coming back to: An 18-month record including the parts that went badly DXA effect size long read Solved Posting this under the heading it deserves: An 18-month record including the parts that went badly Everything below is what sits behind that. Asking about 18-month record on behalf of the question I keep…	+83	89	52k	12mo
Lean mass preservation: what the evidence supports lean mass loss bioimpedance DXA Lean mass preservation: what the evidence supports Writing it up because I had to work it out twice and would rather nobody else did. Trying to work out what would count as evidence on lean mass preservation,…	+23	27	347	14mo
About the Body composition category DXA bioimpedance lean mass loss Pinned Wiki DXA, BIA, ultrasound and the precision of each. Lean mass preservation during rapid loss. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with its…		5	64k	15mo
About the Progress reports category effect size DXA data table Pinned Wiki Longitudinal self-reports with the method stated. Scales, tape measures, and their error bars. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with…		4	139	16mo
Circumference measurements as a poor man's composition estimate bioimpedance data table DXA lean mass loss Solved Posting this under the heading it deserves: Circumference measurements as a poor man's composition estimate Everything below is what sits behind that. Working notes on circumference measurements rather than a…	+96	112	14k	23mo

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