dexa_twice_yearly
TL3 Regular · Calgary, CA
Body composition measurement and its considerable error bars. Two scans a year, same machine, same technician.
Joined 2 October 2024 · last posted 5d · groups: wiki-editors
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Seven-day rolling means and why weekly readings mislead Replied, post #88 · Outcomes › Progress reports · 23 Jul 2026 · 26 likes If a pattern survives a rolling-mean treatment it is worth explaining. Most do not, and that is the useful finding. That has held every time I have looked, which is not…
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PIONEER 6 cardiovascular safety, read as a safety trial rather than an efficacy one Replied, post #12 · Compounds › Oral incretins · 20 Jul 2026 · 0 likes Excipients are not inert from an analytical point of view. A certificate for a formulated tablet has to account for them, and one that reports a purity figure without…
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Prior authorisation: what the criteria usually require — a second dataset Replied, post #43 · Access › Insurance & coverage · 19 Jul 2026 · 0 likes Adding the measurement that post #41 says would settle it. The single most useful preparation is obtaining the actual criteria document rather than working from what…
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Packaging that arrived damaged: documenting it properly Replied, post #43 · Sourcing › Logistics · 16 Jul 2026 · 22 likes I had written a reply contradicting post #39 and deleted it. Here is what survived. Peak periods and public holidays affect this more than any other factor and are…
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Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #60 · Analytics › HPLC & UHPLC · 14 Jul 2026 · 0 likes Column temperature affects retention and selectivity and is omitted from most certificates. Two runs at twenty-five and forty degrees are not the same method. Noting…
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How to ask a question when you cannot say why you are asking it Replied, post #38 · Start Here › How to Ask · 12 Jul 2026 · 9 likes A photograph of a vial is rarely useful and a photograph of a document usually is. Redact the identifiers before you post either.
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Revisiting: PCOS and metabolic overlap: what is and is not studied Replied, post #52 · Clinical › Comorbidities · 9 Jul 2026 · 32 likes What I want from this PCOS and metabolic overlap thread is the list of things that would need to be true for the claim to hold. If we can write that list, we can check…
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Rewriting my first post: a before-and-after, with commentary — what changed since Replied, post #14 · Start Here › How to Ask · 8 Jul 2026 · 0 likes Chromatography questions need the method before anything else: column, gradient, wavelength, injection volume. A purity figure with no method attached cannot be…
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Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Replied, post #53 · Evidence › Journal club · 29 Jun 2026 · 6 likes Trying to state the STEP 1 position in a way that someone who disagrees would recognise as fair, because I do not think the version in this thread passes that test.
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Revisiting: The best-written scientific paper you have read Replied, post #58 · Lounge › Off topic · 28 Jun 2026 · 1 like Off-topic but genuinely curious: how many people here came in through the analytics side rather than the practical side? The two groups seem to read completely…
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Packaging that arrived damaged: documenting it properly Replied, post #32 · Sourcing › Logistics · 27 Jun 2026 · 6 likes I read post #30 twice before replying, because I had assumed the opposite. Import restrictions by jurisdiction: what is legal to import for personal use varies…
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What published stability data actually covers, and what it does not Replied, post #8 · Practice › Storage & stability · 27 Jun 2026 · 19 likes Room-temperature stability claims for licensed products in this class are specific about duration and about whether the period is cumulative. Cumulative is the word…
Maintains 2 documents
- Access notes: GermanyReview due 3 Jan 2027
- Access notes: ItalyReview due 23 Oct 2026