Clinical medicine
In the library, with the original one click away.
Sample author & engagement, to show the format
Megan E. LaBreck, Katherine Crawford, David M. Nemer, et al. · Heart Rhythm Case Reports · 2026 · Read the original
Open in readerRandomized, single-blind, 4-week bright-light vs. dim-light placebo.
Participants were randomized 1:1 to bright light or dim-light placebo for four weeks.
“Participants were randomized 1:1 to receive 30 minutes of 10,000 lux bright light exposure within one hour of waking, or a dim-light placebo, for four consecutive weeks.”
Bright-light exposure meaningfully shortened sleep onset latency.
Sleep onset latency fell 34% (95% CI 21-45, p=0.003) vs. placebo.
“Mean sleep onset latency decreased by 34% (95% CI 21-45), p=0.003, in the bright-light arm relative to placebo.”
Pooled 18 studies measuring circadian misalignment and executive function.
18 studies, n=4,213, each reporting circadian misalignment and an executive-function measure.
“We pooled 18 studies (n=4,213) reporting circadian misalignment and at least one standardized measure of executive function.”
Circadian misalignment has a moderate pooled effect on working memory.
Pooled effect size d=0.41 (95% CI 0.29-0.53) on working memory.
“Circadian misalignment was associated with a pooled effect size of d=0.41 (95% CI 0.29-0.53) on working memory tasks across the included cohorts.”
Three of four open-label melatonin trials reported smaller effects than the double-blind trials in the same pool.
“Three of four open-label melatonin trials reported smaller effects than the double-blind trials in the pool.”
Substantial heterogeneity across pooled cohorts.
Cross-cohort heterogeneity was severe enough that no single p-value should be read as precise.
The verifier could not locate a sentence supporting this claim, so its citation was stripped rather than left dangling.
Actigraphy-tracked sleep, monthly Trail Making Test.
212 hospital residents tracked via actigraphy over six months, monthly Trail Making Test.
“212 hospital residents were followed for six months; sleep was tracked via actigraphy and executive function assessed monthly with the Trail Making Test.”
No significant executive-function decline under short sleep, in this cohort.
Residents averaging under 5 hours of sleep showed no significant Trail Making Test decline, p=0.41.
“Residents averaging under 5 hours of sleep showed no significant decline in Trail Making Test scores relative to the well-rested subgroup, p=0.41.”
8 of 10 passages cited across 11 claims. 1 claimed quote failed verification and had the citation stripped (9% drop rate).
Sample discussion, to show the format.
Checked this against the numeric ledger and the confidence interval matches. Nice.
Checked this against the numeric ledger and the confidence interval matches. Nice.
Traced the headline number back to the source sentence and it holds as quote located. Worth a read.
Traced the headline number back to the source sentence and it holds as quote located. Worth a read.
This paper hasn’t been published on the live platform yet, so there’s no real post to attach a comment to -- the discussion above is illustrative. Once it is (or on a paper someone has actually posted), a comment can be attached to one specific claim rather than the paper as a whole, which is the only way disagreement stays legible.