Cochrane · systematic review · CD006992

Insulin monotherapy compared with the addition of oral glucose‐lowering agents to insulin for people with type 2 diabetes already on insulin therapy and inadequate glycaemic control

Vos, RC, van Avendonk, MJP, Jansen, H, et al. · Cochrane Database of Systematic Reviews · 2016 · Cochrane Library

Metabolic and Endocrine DisordersAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
35
current version
GRADE rated
10
No studies
25
Included studies
NR
No studies 25 · 71.4%Ungraded 0 · 0%Very low 0 · 0%Low 10 · 28.6%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Summary of findings: sulphonylureas

7 questions
OutcomeEffectEvidenceStatus / GRADE
All‐cause mortality
no estimate extractedNRNo studies
Diabetes‐related mortality
no estimate extractedNRNo studies
Diabetes‐related morbidity
no estimate extractedNRNo studies
Health‐related quality of life
no estimate extractedNRNo studies
Patient satisfaction
no estimate extractedNRNo studies
Adverse events: a. mild hypoglycaemia (episodes per participant)
no estimate extracted8 studies · 239 participantsLow
Downgraded: risk of bias, indirectness
HbA1c, change from baseline (%)
no estimate extracted9 studies · 316 participantsLow
Downgraded: risk of bias, indirectness

Summary of findings: metformin

7 questions
OutcomeEffectEvidenceStatus / GRADE
All‐cause mortality
no estimate extractedNRNo studies
Diabetes‐related mortality
no estimate extractedNRNo studies
Diabetes‐related morbidity
no estimate extractedNRNo studies
Health‐related quality of life
no estimate extractedNRNo studies
Patient satisfaction
no estimate extractedNRNo studies
Adverse events: a. mild hypoglycaemia (episodes per participant)
no estimate extracted8 studies · 590 participantsLow
Downgraded: risk of bias, indirectness
HbA1c, change from baseline (%)
no estimate extracted9 studies · 698 participantsLow
Downgraded: risk of bias, indirectness

Summary of findings: pioglitazone

7 questions
OutcomeEffectEvidenceStatus / GRADE
All‐cause mortality
no estimate extractedNRNo studies
Diabetes‐related mortality
no estimate extractedNRNo studies
Diabetes‐related morbidity
no estimate extractedNRNo studies
Health‐related quality of life
no estimate extractedNRNo studies
Patient satisfaction
no estimate extractedNRNo studies
Adverse events: a. mild to moderate hypoglycaemia (episodes per participant)
no estimate extracted2 studies · 760 participantsLow
Downgraded: risk of bias, imprecision, indirectness
HbA1c, change from baseline (%)
no estimate extracted3 studies · 785 participantsLow
Downgraded: risk of bias, imprecision, indirectness

Summary of findings: alpha‐glucosidase inhibitors

7 questions
OutcomeEffectEvidenceStatus / GRADE
All‐cause mortality
no estimate extractedNRNo studies
Diabetes‐related mortality
no estimate extractedNRNo studies
Diabetes‐related morbidity
no estimate extractedNRNo studies
Health‐related quality of life
no estimate extractedNRNo studies
Patient satisfaction
no estimate extractedNRNo studies
Adverse events: a. mild hypoglycaemia (% of participants)
no estimate extracted4 studies · 583 participantsLow
Downgraded: risk of bias, imprecision, indirectness
HbA1c, change from baseline (%)
no estimate extracted3 studies · 448 participantsLow
Downgraded: risk of bias, imprecision, indirectness

Summary of findings: DPP‐4 inhibitors

7 questions
OutcomeEffectEvidenceStatus / GRADE
All‐cause mortality
no estimate extractedNRNo studies
Diabetes‐related mortality
no estimate extractedNRNo studies
Diabetes‐related morbidity
no estimate extractedNRNo studies
Health‐related quality of life
no estimate extractedNRNo studies
Patient satisfaction
no estimate extractedNRNo studies
Adverse events: a. hypoglycaemia (% of participants)
no estimate extracted3 studies · 503 participantsLow
Downgraded: risk of bias, imprecision, indirectness
HbA1c, change from baseline (%)
no estimate extracted2 studies · 265 participantsLow
Downgraded: risk of bias, imprecision, indirectness