Observational studyDiabetes, obesity & metabolism2017

Managing glycaemia in older people with type 2 diabetes: A retrospective, primary care-based cohort study, with economic assessment of patient outcomes.

Jason Gordon, Phil McEwan, Marc Evans, Jorge Puelles, Alan Sinclair

Abstract readComparative StudyObservational Study
In one paragraph

Observational study in Diabetes, obesity & metabolism, 2017. The graph read 2 numbers from its abstract, feeding 2 cells of the map, but none could be read as for or against, so it casts no vote. It also reports 2 associations that do not count as treatment evidence, such as HR 0.52 (0.27 to 0.99) for MI rate. Cited by 9 papers, 1 of them a synthesis that pooled it.

2numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

Read, but not usablea number the graph found but could not read as for or against

MI ratemetformin + DPP-4 inhibitor vs metformin + SUan association or prognostic statement, not a treatment comparison · t2dfeeds 2 cells of the map
HR 0.520.27 to 0.99
In multivariate adjusted analyses, total event rates for MACE with metformin + dipeptidyl peptidase-4 (DPP-4) inhibitor were significantly lower than with metformin + SU (0.61, 95% confidence interval [CI] 0.39-0.98), driven by a lower MI rate in the metformin + DPP-4 inhibitor group (0.52, 95% CI 0.27-0.99).
Total event rates for MACEmetformin + DPP-4 inhibitor vs metformin + SUan association or prognostic statement, not a treatment comparison · t2dfeeds 2 cells of the map
HR 0.610.39 to 0.98
In multivariate adjusted analyses, total event rates for MACE with metformin + dipeptidyl peptidase-4 (DPP-4) inhibitor were significantly lower than with metformin + SU (0.61, 95% confidence interval [CI] 0.39-0.98), driven by a lower MI rate in the metformin + DPP-4 inhibitor group (0.52, 95% CI 0.27-0.99).

clause the extractor read what became the number

2 · Its place on the map

Where it lands on the map

Rows are treatments, columns are outcomes. The coloured squares are the cells this paper feeds, coloured by the vote it casts there. Click one to jump to what this paper adds to it.

supports the treatmentfavours the comparatorno clear differenceread, but no usable result
3 · What it changes

What it adds to each cell

For every cell the paper feeds: the belief in the claim with and without this paper, and this paper's estimate drawn against every other readable study in the cell. The ringed dot is this paper.

DPP-4 inhibitors×cardiovascular events

No readable resultOpen on the map →What to test next →

3 readable studies in this cell: 2 favour the treatment, 1 find no difference, 0 favour the comparator.

Belief with this paper
0.99replicated · 2 families support, 0 contradict · against placebo
Without itNot a counted family in this claim, so removing it changes nothing.
← favours the treatmentfavours the comparator →
1 · no effect
NCT01438814689 enrolled · 2011
OR 0.960.67 to 1.37

This paper's own estimate is on a different scale from the rest of the cell, so it is not drawn here.

Metformin×cardiovascular events

No readable resultOpen on the map →What to test next →

5 readable studies in this cell: 4 favour the treatment, 1 find no difference, 0 favour the comparator.

Belief with this paper
0.50contested · 4 families support, 2 contradict · against placebo
Without itNot a counted family in this claim, so removing it changes nothing.
← favours the treatmentfavours the comparator →
1 · no effect

This paper's own estimate is on a different scale from the rest of the cell, so it is not drawn here.

4 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

5 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Pharmacological Agents Utilized in Patients With Type-2 Diabetes: Beyond Lowering A1c.P & T : a peer-reviewed journal for formulary management · 2018
    Article
  7. Article
  8. Article
  9. Observational
6 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

7 · Who and what money

Authors and funding

5 authors.

Jason GordonHealth Economics and Outcomes Research Ltd, Cardiff, UK.
Phil McEwanHealth Economics and Outcomes Research Ltd, Cardiff, UK.
Marc EvansDiabetes Resource Centre, Llandough Hospital, Cardiff, UK.
Jorge PuellesGlobal Outcomes Research, Takeda Development Centre Europe Ltd, London, UK.
Alan SinclairFoundation for Diabetes Research in Older People, Diabetes Frail Ltd, Worcester, UK.

Funding

No grant is acknowledged in the PubMed record.

8 · The paper itself

Abstract

The marked sentences are the ones the graph read a number from.

aimsTo describe the relative health and economic outcomes associated with different second-line therapeutic approaches to manage glycaemia in older type 2 diabetes patients requiring escalation from metformin monotherapy. MATERIALS AND

methodsThe Clinical Practice Research Datalink database was used to inform a retrospective observational cohort study of patients with type 2 diabetes treated with metformin monotherapy requiring escalation (addition or switch) to a second-line oral regimen from January 1, 2008 to December 31, 2014. Primary outcomes included time to first event (any event, myocardial infarction [MI], stroke, or composite of MI/stroke [major adverse cardiovascular event; MACE]) and total event rate. The health economic consequences associated with the choice of second-line treatment in older patients were assessed using the CORE Diabetes Model.

resultsA total of 10 484 patients were included; the majority escalated to second-line treatment with metformin + sulphonylurea (SU; 42%) or switched to SU monotherapy (28%). In multivariate adjusted analyses, total event rates for MACE with metformin + dipeptidyl peptidase-4 (DPP-4) inhibitor were significantly lower than with metformin + SU (0.61, 95% confidence interval [CI] 0.39-0.98), driven by a lower MI rate in the metformin + DPP-4 inhibitor group (0.52, 95% CI 0.27-0.99). Economic analyses estimated that metformin + DPP-4 inhibitor treatment was associated with the largest gain in health benefit, and cost-effectiveness ratios were favourable (<£30 000 per quality-adjusted life-year) for all second-line treatment scenarios.

conclusionsWith respect to treatment choice, data from the present study support the notion of prescribing beyond metformin + SU, as alternative regimens have been shown to be associated with reduced outcomes risk and value for money.

Indexed as

AgingAgedCohort StudiesCost-Benefit AnalysisCost of IllnessDiabetes Mellitus, Type 2Dipeptidyl-Peptidase IV InhibitorsDrug MonitoringDrug ResistanceDrug Therapy, CombinationFemaleFollow-Up StudiesGlycated HemoglobinHealth Care CostsHumansHyperglycemiaDipeptidyl-Peptidase IV InhibitorsGlycated Hemoglobinhemoglobin A1c protein, humanHypoglycemic AgentsMetforminmanagementmetforminolder patientssecond-linetype 2 diabetes

Identifiers

PMID28026911
PMCPMC5412932

What Socratic holds

Texttitle and abstract
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.