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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

1,105 questions in 84 reviews · Metabolic and Endocrine Disorders

current versions
No studies 434 · 39.3%Ungraded 32 · 2.9%Very low 246 · 22.3%Low 237 · 21.4%Moderate 132 · 11.9%High 24 · 2.2%

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.

QuestionEffectEvidenceStatus / GRADE
Summary of findings: insulin glargine vs NPH insulin
Serious adverse events (n/N)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 1.08 [0.63, 1.84]8 studies · 2229 participantsModerate
Summary of findings: insulin glargine vs NPH insulin
HbA1c (%)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted9 studies · 2285 participantsModerate
Summary of findings: insulin detemir vs insulin glargine
All‐cause mortality
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted2 studies · 763 participantsLow
Summary of findings: insulin detemir vs insulin glargine
Health‐related quality of life
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extractedNRNo studies
Summary of findings: insulin detemir vs insulin glargine
Severe hypoglycaemia (n/N) Definition: hypoglycaemia requiring third party assistance
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 0.59 [0.13, 2.63]2 studies · 763 participantsVery low
Summary of findings: insulin detemir vs insulin glargine
Non‐fatal myocardial infarction/stroke Definition: non‐fatal myocardial infarction/stroke
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted1 study · 443 participantsLow
Summary of findings: insulin detemir vs insulin glargine
Severe nocturnal hypoglycaemia (n/N) Definition: severe hypoglycaemia occurring from 11 p.m. to 6 a.m.
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 0.55 [0.06, 5.12]2 studies · 763 participantsVery low
Summary of findings: insulin detemir vs NPH insulin
Health‐related quality of life Description: diabetes health profile; insulin therapy‐related quality of life at night (scale not specified)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted3 studies · 870 participantsLow
Summary of findings: insulin detemir vs insulin glargine
Serious adverse events (n/N)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 1.72 [0.91, 3.28]2 studies · 763 participantsLow
Summary of findings: insulin detemir vs insulin glargine
HbA1c (%)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted2 studies · 763 participantsLow
Summary of findings: insulin degludec vs insulin detemir
All‐cause mortality
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted2 studies · 802 participantsLow
Summary of findings: insulin degludec vs insulin detemir
Health‐related quality of life Scale: Short‐Form 36 version 2 (higher values mean better health‐related quality of life)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted1 study · 454 participantsLow
Summary of findings: insulin degludec vs insulin detemir
Severe hypoglycaemia (n/N) Definition: hypoglycaemia requiring third party assistance (Davies 2014) or altered mental status and cannot assist in their own care, is semiconscious or unconscious, or in a coma ± convulsions and may require parentera...
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 1.17 [0.81, 1.69]2 studies · 802 participantsLow
Summary of findings: insulin degludec vs insulin detemir
Non‐fatal myocardial infarction/stroke Definition: non‐fatal myocardial infarction/stroke
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted1 study · 453 participantsLow
Summary of findings: insulin degludec vs insulin detemir
Severe nocturnal hypoglycaemia (n/N) Definition: severe hypoglycaemia occurring 00:01‐05:59 (Davies 2014) or 23:00‐07:00 (BEGIN Young)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 1.12 [0.51, 2.46]2 studies · 802 participantsLow
Summary of findings: insulin degludec vs insulin detemir
Serious adverse events (n/N)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 1.25 [0.76, 2.05]2 studies · 802 participantsLow
Summary of findings: insulin degludec vs insulin detemir
HbA1c (%)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted2 studies · 802 participantsLow
Summary of findings: insulin degludec vs insulin glargine
All‐cause mortality
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
Peto OR 1.34 [0.15, 11.93]3 studies · 973 participantsVery low
Summary of findings: insulin detemir vs NPH insulin
Severe hypoglycaemia (n/N) Definition: hypoglycaemia requiring third party assistance (Bartley 2008; Kobayashi 2007; NCT00605137; Robertson 2007; Russell‐Jones 2004; Standl 2004; Thalange 2013; Vague 2003); episodes where the children were semi‐co...
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 0.69 [0.52, 0.92]8 studies · 3219 participantsModerate
Summary of findings: insulin degludec vs insulin glargine
Health‐related quality of life Scale: Short‐Form 36 version 2 (higher values mean better health‐related quality of life)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted2 studies · 1042 participantsVery low
Summary of findings: insulin degludec vs insulin glargine
Severe hypoglycaemia (n/N) Definition: hypoglycaemia requiring third party assistance (BEGIN Flex T1; BEGIN Young) or an event associated with impaired consciousness or seizure (Urakami 2017)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 1.22 [0.82, 1.82]3 studies · 970 participantsLow
Summary of findings: insulin degludec vs insulin glargine
Non‐fatal myocardial infarction/stroke Definition: non‐fatal myocardial infarction/cerebral ischaemia
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted3 studies · 970 participantsLow
Summary of findings: insulin degludec vs insulin glargine
Severe nocturnal hypoglycaemia (n/N) Definition: severe hypoglycaemia occurring from 22:00 to 06:59 h
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 1.39 [0.59, 3.27]3 studies · 970 participantsLow
Summary of findings: insulin degludec vs insulin glargine
Serious adverse events (n/N)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 0.92 [0.58, 1.46]3 studies · 970 participantsLow
Summary of findings: insulin degludec vs insulin glargine
HbA1c (%)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted4 studies · 1388 participantsLow
Summary of findings: insulin detemir vs NPH insulin
Non‐fatal myocardial infarction/stroke Definition: myocardial infarction
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted1 study · 495 participantsLow
Summary of findings: insulin detemir vs NPH insulin
Severe nocturnal hypoglycaemia (n/N) Definition: severe hypoglycaemia occurring 23:00‐06:00 (Bartley 2008; NCT00605137; Russell‐Jones 2004; Standl 2004; Vague 2003); occurring 22:00‐07:00 (Robertson 2007; Thalange 2013)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 0.67 [0.39, 1.17]7 studies · 2925 participantsModerate
Summary of findings: insulin detemir vs NPH insulin
Serious adverse events (n/N)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
RR 0.95 [0.75, 1.21]9 studies · 3332 participantsModerate
Summary of findings: insulin detemir vs NPH insulin
HbA1c (%)
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted8 studies · 3122 participantsModerate
Summary of findings: insulin glargine vs NPH insulin
All‐cause mortality
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
0.14 [0, 6.98]8 studies · 2175 participantsModerate
Summary of findings: insulin glargine vs NPH insulin
Health‐related quality of life Scales: Well‐Being Enquiry for Diabetics; General Well‐being; Diabetes Quality of Life for Youth and Parents' Diabetes Quality of Life
(Ultra‐)long‐acting insulin analogues for people with type 1 diabetes mellitus (2021) · Cochrane
no estimate extracted4 studies · 1013 participantsLow
Intervention NR
All‐cause mortality Median · individuals without known diabetes mellitus but at high risk for the condition
Screening for type 2 diabetes mellitus (2020) · Cochrane
HR 1.06 [0.9, 1.25]1 study · 20184 participantsLow
Intervention NR
Diabetes‐related mortality Assessed according to whether diabetes was included anywhere on the death certificate · individuals without known diabetes mellitus but at high risk for the condition
Screening for type 2 diabetes mellitus (2020) · Cochrane
HR 1.26 [0.75, 2.12]1 study · 20184 participantsLow
Intervention NR
Diabetes‐related morbidity · individuals without known diabetes mellitus but at high risk for the condition
Screening for type 2 diabetes mellitus (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Incidence of type 2 diabetes · individuals without known diabetes mellitus but at high risk for the condition
Screening for type 2 diabetes mellitus (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Health‐related quality of life · individuals without known diabetes mellitus but at high risk for the condition
Screening for type 2 diabetes mellitus (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Adverse events · individuals without known diabetes mellitus but at high risk for the condition
Screening for type 2 diabetes mellitus (2020) · Cochrane
no estimate extractedNRNo studies
Intervention NR
Socioeconomic effects · individuals without known diabetes mellitus but at high risk for the condition
Screening for type 2 diabetes mellitus (2020) · Cochrane
no estimate extractedNRNo studies
Insulin glargine vs NPH insulin
Diabetes‐related complications (1) Fatal MI (2) Fatal stroke (3) Progression in retinopathy (4) Amputations (5) ESRD
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
RR 1.03 [0.6, 1.77]1 study · 4 participantsVery low
Insulin detemir vs NPH insulin
Health‐related quality of life
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
no estimate extracted3 studies · 873 participantsVery low
Insulin detemir vs NPH insulin
All‐cause mortality
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
Peto OR 0.74 [0.2, 2.65]8 studies · 2328 participantsLow
Insulin detemir vs NPH insulin
AEs other than hypoglycaemia (1) SAE (2) Overall AE (3) AE leading to discontinuation
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
RR 0.88 [0.64, 1.2]1 study · 8 participantsModerate
Insulin detemir vs NPH insulin
Socioeconomic effects
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
no estimate extractedNRNo studies
Insulin detemir vs NPH insulin
HbA1c
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
no estimate extracted7 studies · 2233 participantsLow
Insulin glargine vs NPH insulin
Hypoglycaemic episodes(1) Severe hypoglycaemia (2) Serious hypoglycaemia (3) Confirmed hypoglycaemia (BG < 75 mg/dL) (4) Confirmed hypoglycaemia (BG < 55 mg/dL) (5) Confirmed nocturnal hypoglycaemia (BG < 75 mg/dL) (6) Confirmed nocturnal hypoglyc...
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
RR 0.68 [0.46, 1.01]1 study · 14 participantsVery low
Insulin glargine vs NPH insulin
HRQoL
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
no estimate extracted3 studies · 1228 participantsVery low
Insulin glargine vs NPH insulin
All‐cause mortality
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
Peto OR 1.06 [0.62, 1.82]14 studies · 6173 participantsLow
Insulin glargine vs NPH insulin
AEs other than hypoglycaemia (1) SAE (2) Overall AE (3) AE leading to discontinuation
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
RR 0.98 [0.87, 1.1]1 study · 13 participantsModerate
Insulin glargine vs NPH insulin
Socioeconomic effects
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
no estimate extractedNRNo studies
Insulin glargine vs NPH insulin
HbA1c
(Ultra‐)long‐acting insulin analogues versus NPH insulin (human isophane insulin) for adults with type 2… (2020) · Cochrane
no estimate extracted16 studies · 5809 participantsLow