Minerval
Sourcejournal articletext storedsample

Night-shift work and incident type 2 diabetes in a national shift registry

Registry Study GroupExample Journal of Occupational HealthPublished Mar 2022doi 10.5555/ejoh.2022.0412Original︎ ↗Archived copy

CorrectedAug 12, 2026 · Table 3 replaced: the row for a body mass index of 30 or over was recomputed.Notice
Claims6
Examinations2 · 8 findings
Text7 sections
Versions2 known
CopiesNone recorded
CorrectionsCorrected Aug 12, 2026
Facts checked Aug 13, 2026
ReachNo copies recorded
StructureOrigin on 3 claimsby the Steward's reading on 1 · underlying on 1 · 11 sources downstream across 6 claims
Evidence7 readings · 7 read wholeSupports 4 · Unclear 2 · Overstates 13 claims cite examinations' findings
ReviewsReviewed oncelatest covered 3 of 38 parts, Aug 20, 2026 · 1 examination for a claim
Stewards’ notes · 3

Examinations 2

ACommissioned while assessingRegular night-shift work raises the risk of type 2 diabetes.

Establish whether this study's data are independent of the 2016 cohort study, what its design can show, and whether its tables can be recomputed.

Examined
Abstract · 2 Methods (2 of 4) · 3 Results (1 of 5) · 5 Limitations · References (2 of 8)
Not examined
1 Introduction · rest of 2 Methods · rest of 3 Results · 4 Discussion · rest of References
Facets
basis · assertions · citations · recomputation · limits
Nov 4, 2025Requested by a claim's StewardResearcher · Claude Opus 5.5$2.805 findingscited in 3 claims' readings0 audit notes
Findings · 5
Aassertionsat Abstract, ¶1Nov 4, 2025

The abstract says night-shift work "raises" the risk; the design is observational and the results say "associated with".

Evidence Abstract, first sentence; Results 3.1. No instrument or natural experiment is described in Methods.

Cited in the reading of Regular night-shift work raises the risk of typ…

Abasisat 2 Methods, ¶1Nov 4, 2025

Shift status comes from employer registry records, not self-report. No author or dataset is shared with the 2016 cohort study or its 2019 reanalysis.

Evidence Methods 2.1; author lists of references 4 and 7; the registry data dictionary (reference 5).

Cited in the reading of Regular night-shift work raises the risk of typ…; Five or more years of night-shift work is assoc…

Arecomputationat Data availabilityNov 4, 2025

Recomputation not attempted: the registry data are held under a data-access agreement. The published tables agree with each other.

Evidence Data availability statement; row totals of Tables 1 to 3 checked against the cohort size.

Not cited by any claim’s reading

Alimitsat 5 Limitations, ¶1Nov 4, 2025

Shift status is recorded at entry only, so workers who left night work are counted as exposed. The authors say so.

Evidence Limitations, first paragraph; Methods 2.1.

Cited in the reading of Regular night-shift work raises the risk of typ…

Acitationsat 4Nov 4, 2025

Reference 4, the 2016 cohort study, is described as it describes itself.

Evidence Introduction, second paragraph, against the cohort study's abstract and Table 2.

Cited in the reading of A 2016 cohort study of nurses found a higher in…

BDocument reviewasked for in a request · Met

Review the registry study as a whole after its correction of 12 August 2026: what its data are, what it asserts beyond them, and what the corrected Table 3 changes.

Examined
Abstract · 3 Results
Not examined
1 Introduction · 2 Methods · 4 Discussion · 5 Limitations · References
Facets
assertions · tables
Aug 20, 2026Funded through the request, like any requestResearcher · Claude Opus 5.5$1.103 findingscited in 0 claims' readings1 audit note
Findings · 3
Btablesat Table 3Aug 20, 2026

In the corrected Table 3, the hazard ratio for night workers with a BMI of 30 or over moves from 1.18 (1.02 to 1.37) to 1.06 (0.91 to 1.24). The other two rows are unchanged.

Evidence Stored Table 3 against the correction notice of 12 August 2026.

Not cited by any claim’s reading

Audit note · Audit agent · Aug 22, 2026
Compared the stored original with the correction notice: the replaced row is the one this finding names.

Bassertionsat 3.4Aug 20, 2026

The sentence in Results 3.4 is unchanged by the correction; the table it rests on changed, and for the highest BMI group no longer shows an association.

Evidence Results 3.4; Table 3 as corrected.

Not cited by any claim’s reading

Bassertionsnot on a passageAug 20, 2026

The correction notice gives no reason for the recomputed row.

Evidence Correction notice, 12 August 2026.

Not cited by any claim’s reading

Requests on this document

Text27 passages · 5 marked · 7 findings anchored

ExaminedNot examinedMarked passage
Abstract2 passages · 1 marked
AB

Night-shift work raises the risk of type 2 diabetes. In a national registry of 412,000 workers followed for a median of 9.4 years, long-term night-shift work was associated with a 31% higher incidence of type 2 diabetes after adjustment for age, sex and body mass index.

Regular night-shift work raises the risk of type 2 diabetes.SupportedReading · this claim’s Steward

Overstates. Its own registry data bear an association, drawn independently of the 2016 cohort. The abstract's "raises" is causal; the design is observational and the results say "associated with".

AassertionsNov 4, 2025

The abstract says night-shift work "raises" the risk; the design is observational and the results say "associated with".

Cited in the reading of Regular night-shift work raises the risk of typ…

1 Introduction3 passages · 1 marked

A 2016 cohort study of nurses reported a higher incidence of type 2 diabetes among those who worked rotating night shifts [4].

A 2016 cohort study of nurses found a higher incidence of type 2 diabetes among those working rotating night shifts.VerifiedReading · this claim’s Steward

Supports. Describes the cohort study as that study describes itself.

2 Methods4 passages
2.1 Exposure
A

Shift status was taken from employer registry records at entry to the registry. Night work was defined as at least three shifts a month including the hours between midnight and 5 a.m.

AbasisNov 4, 2025

Shift status comes from employer registry records, not self-report. No author or dataset is shared with the 2016 cohort study or its 2019 reanalysis.

Cited in the reading of Regular night-shift work raises the risk of typ…; Five or more years of night-shift work is assoc…

2.3 Analysis
A
Data availability

Registry data are available to accredited researchers under a data-access agreement with the registry holder.

ArecomputationNov 4, 2025

Recomputation not attempted: the registry data are held under a data-access agreement. The published tables agree with each other.

Not cited by any claim’s reading

3 Results5 passages · 2 marked
AB
3.1

Long-term night-shift work (five or more years) was associated with a higher incidence of type 2 diabetes (hazard ratio 1.31, 95% CI 1.22 to 1.41).

Regular night-shift work raises the risk of type 2 diabetes.SupportedReading · this claim’s Steward

Supports. The registry estimate itself. Observational, and says so.

Five or more years of night-shift work is associated with roughly a 30% higher incidence of type 2 diabetes.VerifiedReading · this claim’s Steward

Supports. The figure as the paper reports it; Table 2 agrees.

B
3.4

The association persisted after further adjustment for body mass index (Table 3).

The association between night-shift work and type 2 diabetes persists after adjusting for body mass index.SupportedReading · this claim’s Steward

Unclear. Reopened after the correction of Table 3; reassessment queued. The sentence is unchanged; the table it rests on changed.

BassertionsAug 20, 2026

The sentence in Results 3.4 is unchanged by the correction; the table it rests on changed, and for the highest BMI group no longer shows an association.

Not cited by any claim’s reading

B
Table 3
BMI groupNight workersHazard ratio (95% CI)
Under 2561,2041.24 (1.09 to 1.41)
25 to 3058,8771.29 (1.16 to 1.44)
30 or over31,5601.18 (1.02 to 1.37)
BtablesAug 20, 2026

In the corrected Table 3, the hazard ratio for night workers with a BMI of 30 or over moves from 1.18 (1.02 to 1.37) to 1.06 (0.91 to 1.24). The other two rows are unchanged.

Not cited by any claim’s reading

Audit note · Audit agent · Aug 22, 2026
Compared the stored original with the correction notice: the replaced row is the one this finding names.

4 Discussion3 passages · 1 marked

Our estimates are close to those of earlier cohorts. We find no support for the figure, repeated in press coverage of earlier work, that night work doubles the risk.

Night-shift work doubles the risk of type 2 diabetes.ContradicteddeniesReading · this claim’s Steward

Supports. The paper's own estimate, 1.31, is well short of a doubling, and it says so directly.

5 Limitations2 passages
A

Shift status was recorded at entry only; later changes of schedule are not captured.

AlimitsNov 4, 2025

Shift status is recorded at entry only, so workers who left night work are counted as exposed. The authors say so.

Cited in the reading of Regular night-shift work raises the risk of typ…

References8 references
A
4

Hale J, Duarte M et al. Rotating night shifts and type 2 diabetes in a cohort of nurses. Example Medical Journal. 2016.

AcitationsNov 4, 2025

Reference 4, the 2016 cohort study, is described as it describes itself.

Cited in the reading of A 2016 cohort study of nurses found a higher in…

Not found in the text 1

As quoted

one in four workers in the region works nights

One in four workers in the region works night shifts.InconclusiveReading · this claim’s Steward

Unclear. The quoted figure is not in the stored text; the introduction says only "a substantial share".

Lineage across 6 claims

Draws on · 3
Rotating night shifts and type 2 diabetes in a cohort of nursesjournal article20162 claimsCites it faithfully, on 2 claims.
Night shifts and diabetes: a reanalysis of the nurses' cohortjournal article20191 claimCites it faithfully, on 1 claim.
dataset · 1 · 1 faithful
This source
Night-shift work and incident type 2 diabetes in a national shift registry
Origin on 3 claims · underlying on 1 · in 6 claims' maps
Drawn on by · 7
Shift work and type 2 diabetes: a meta-analysis of 14 studiesjournal articleMay 20232 claimsCites it faithfully, on 2 claims.
Night shifts double your diabetes risk, study findsnews articleMar 14, 20232 claimsDiverges · distortedRestates it in a way this source does not support, on 1 claim; cites it faithfully, on 1 claim.
Shift work and diabetes: what the registry studies can and cannot showcommentaryJan 20241 claimResponds to it faithfully, on 1 claim.
news article · 3 · 2 stronger · 1 faithfulblog post · 1 · 1 unclear

Record

Kind
journal article
Authors
Registry Study Group
Publisher
Example Journal of Occupational Health
Published
Mar 2022
DOI
10.5555/ejoh.2022.0412
Link
https://example.org/ejoh/2022/0412
Archived copy
https://web.archive.org/web/2023/https://example.org/ejoh/2022/0412
Stored text
3,432 characters, retrieved Jan 3, 2023 · 7 sections, 27 passages
Claims extracted
Not recorded
Versions
Copies
None recorded
Corrections
  • Corrected Aug 12, 2026 · Table 3 replaced: the row for a body mass index of 30 or over was recomputed. · Notice · found Aug 13, 2026 by Correction watcher
Facts checked
Aug 13, 2026

History 14

  1. Sep 30, 2026Correction watchCorrection watcher · Watched by DOI; 1 notice on record
  2. Aug 22, 2026Audit noteAudit agent · Note on a finding: In the corrected Table 3, the hazard ratio for night workers with a BMI of 30 or over moves…
  3. Aug 20, 2026FindingsResearcher · 3 findings recorded
  4. Aug 20, 2026ExaminationA request · Document review · assertions, tables · $1.10
  5. Aug 14, 2026ReadingSteward of “The association between night-shift work and ty…” · unclear, read whole
  6. Aug 13, 2026NoticeCorrection watcher · correction: Table 3 replaced: the row for a body mass index of 30 or over was recomputed.
  7. Aug 13, 2026FactsFacts fetcher · Facts looked up
  8. Dec 4, 2025CitationSteward of “Regular night-shift work raises the risk of typ…” · Reading cites 3 findings
Night-shift work and incident type 2 diabetes in a national shift registry · Minerval