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Search review questions

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
Smartphone app vs no/minimal intervention
Adherence to Mediterranean diet (AMD) score change (score · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted1 study · 650 participantsModerate
Smartphone app vs no/minimal intervention
Healthy eating index (HEI‐2005) score change (score · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted1 study · 245 participantsModerate
Smartphone app vs no/minimal intervention
Adverse events · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted2 studies · 502 participantsVery low
Smartphone app vs no/minimal intervention
Estimated energy expenditure (EEE) (min/week) · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted1 study · 60 participantsVery low
Smartphone app vs no/minimal intervention
Leisure time physical activity (LTPA)(kcal/week) · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted1 study · 245 participantsModerate
Smartphone app vs no/minimal intervention
Cardiorespiratory fitness (CF) (mL/kg/min) · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted1 study · 60 participantsVery low
Smartphone app vs no/minimal intervention
Total activity time (TAA) (min/week) · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted1 study · 650 participantsModerate
Smartphone app vs no/minimal intervention
Body mass index (BMI) (kg/m2) · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted2 studies · 146 participantsVery low
Smartphone app vs no/minimal intervention
Body weight (BW)(kg) · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted3 studies · 441 participantsModerate
Smartphone app vs no/minimal intervention
Body weight change (BWC) (kg) · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted3 studies · 1044 participantsLow
Smartphone app vs no/minimal intervention
Health‐related quality of life(WHOQOL‐BREF questionnaire, score · adults
Mobile health (m‐health) smartphone interventions for adolescents and adults with overweight or obesity (2024) · Cochrane
no estimate extracted1 study · 149 participantsModerate
Low glycaemic index (GI) or glycaemic load (GL) diets vs higher GI or GL diets
Body weight (kg) · people with overweight or obesity
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extracted7 studies · 403 participantsModerate
Low glycaemic index (GI) or low glycaemic load (GL) diets vs any other diet
All‐cause mortality · people with obesity or overweight
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extractedNRNo studies
Low glycaemic index (GI) or glycaemic load (GL) diets vs higher GI or GL diets
Body mass index (BMI) (kg/m2) · people with overweight or obesity
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extracted4 studies · 186 participantsLow
Low glycaemic index (GI) or glycaemic load (GL) diets vs higher GI or GL diets
Adverse events (n/N) · people with overweight or obesity
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extracted2 studies · 106 participantsVery low
Low glycaemic index (GI) or glycaemic load (GL) diets vs higher GI or GL diets
Health‐related quality of life Scale · people with overweight or obesity
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extracted1 study · 42 participantsVery low
Low glycaemic index (GI) or glycaemic load (GL) diets vs higher GI or GL diets
All‐cause mortality · people with overweight or obesity
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extractedNRNo studies
Low glycaemic index (GI) or low glycaemic load (GL) diets vs any other diet
Body weight (kg) · people with obesity or overweight
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extracted3 studies · 723 participantsModerate
Low glycaemic index (GI) or low glycaemic load (GL) diets vs any other diet
Body mass index (BMI) (kg/m2) · people with obesity or overweight
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extracted2 studies · 650 participantsModerate
Low glycaemic index (GI) or low glycaemic load (GL) diets vs any other diet
Adverse events (n/N) · people with obesity or overweight
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extracted2 studies · 682 participantsLow
Low glycaemic index (GI) or low glycaemic load (GL) diets vs any other diet
Health‐related quality of life · people with obesity or overweight
Low glycaemic index or low glycaemic load diets for people with overweight or obesity (2023) · Cochrane
no estimate extractedNRNo studies
Intervention NR
All‐cause mortality (death from any cause)
Perioperative glycaemic control for people with diabetes undergoing surgery (2023) · Cochrane
RR 1.08 [0.88, 1.33]18 studies · 2551 participantsHigh
Intervention NR
Severe hypoglycaemic episodes (number of severe hypoglycaemic episodes)
Perioperative glycaemic control for people with diabetes undergoing surgery (2023) · Cochrane
RR 4.73 [2.12, 10.55]11 studies · 1896 participantsLow
Intervention NR
Infectious complications (infectious complication after surgery (e.g. pneumonia, urinary tract infection))
Perioperative glycaemic control for people with diabetes undergoing surgery (2023) · Cochrane
RR 0.75 [0.55, 1.04]18 studies · 2453 participantsLow
Intervention NR
Cardiovascular events (incidents that may cause damage to the cardiovascular system)
Perioperative glycaemic control for people with diabetes undergoing surgery (2023) · Cochrane
RR 0.73 [0.55, 0.97]12 studies · 1454 participantsLow
Intervention NR
Renal failure (number of individuals with an elevation of serum creatinine greater than 2 mg/dL or requiring dialysis)
Perioperative glycaemic control for people with diabetes undergoing surgery (2023) · Cochrane
RR 0.92 [0.69, 1.22]14 studies · 2086 participantsLow
Intervention NR
Length of ICU stay (days admitted to the ICU unit)
Perioperative glycaemic control for people with diabetes undergoing surgery (2023) · Cochrane
no estimate extracted11 studies · 1687 participantsLow
Intervention NR
Length of hospital stay (days admitted to the hospital)
Perioperative glycaemic control for people with diabetes undergoing surgery (2023) · Cochrane
no estimate extracted12 studies · 1520 participantsVery low
Parathyroidectomy vs observation
Cure of PHPT · people with primary hyperparathyroidism
Parathyroidectomy for adults with primary hyperparathyroidism (2023) · Cochrane
RR 0.04 [0.02, 0.08]8 studies · 333 participantsModerate
Parathyroidectomy vs observation
Morbidity related to PHPT · people with primary hyperparathyroidism
Parathyroidectomy for adults with primary hyperparathyroidism (2023) · Cochrane
no estimate extracted5 studies · 287 participantsVery low
Parathyroidectomy vs observation
Serious adverse events · people with primary hyperparathyroidism
Parathyroidectomy for adults with primary hyperparathyroidism (2023) · Cochrane
3.35 [0.14, 78.6]4 studies · 168 participantsLow
Parathyroidectomy vs observation
All‐cause mortality · people with primary hyperparathyroidism
Parathyroidectomy for adults with primary hyperparathyroidism (2023) · Cochrane
2.11 [0.2, 22.6]2 studies · 133 participantsVery low
Parathyroidectomy vs observation
Health‐related quality of life · people with primary hyperparathyroidism
Parathyroidectomy for adults with primary hyperparathyroidism (2023) · Cochrane
no estimate extracted3 studies · 195 participantsVery low
Parathyroidectomy vs observation
Hospitalisation for hypercalcaemia, renal impairment or pancreatitis · people with primary hyperparathyroidism
Parathyroidectomy for adults with primary hyperparathyroidism (2023) · Cochrane
RR 0.91 [0.2, 4.25]6 studies · 287 participantsLow
DPP‐4 inhibitors vs sulphonylureas
Hypoglycaemic episodes a) Non‐serious hypoglycaemia
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
RR 0.53 [0.41, 0.68]4 studies · 2495 participantsVery low
Meglitinides vs sulphonylureas
Adverse events other than hypoglycaemia
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
Meglitinides vs sulphonylureas
All‐cause mortality
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
Meglitinides vs sulphonylureas
Treatment satisfaction
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
Meglitinides vs sulphonylureas
HbA1c (%)
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extracted1 study · 235 participantsVery low
SGLT‐2 inhibitors vs sulphonylureas
Hypoglycaemic episodes a) Non‐serious hypoglycaemia
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
RR 0.28 [0.1, 0.79]1 study · 110 participantsVery low
SGLT‐2 inhibitors vs sulphonylureas
Health‐related quality of life
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
SGLT‐2 inhibitors vs sulphonylureas
Adverse events other than hypoglycaemia
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
RR 1 [0.6, 1.67]1 study · 110 participantsVery low
SGLT‐2 inhibitors vs sulphonylureas
All‐cause mortality
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
SGLT‐2 inhibitors vs sulphonylureas
Treatment satisfaction
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
SGLT‐2 inhibitors vs sulphonylureas
HbA1c (%)
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extracted1 study · 103 participantsLow
DPP‐4 inhibitors vs sulphonylureas
Health‐related quality of life
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
GLP‐1 analogues inhibitors vs sulphonylureas
Hypoglycaemic episodes a) Non‐serious hypoglycaemia
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
RR 0.45 [0.28, 0.74]3 studies · 596 participantsVery low
GLP‐1 analogues inhibitors vs sulphonylureas
Health‐related quality of life
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies
GLP‐1 analogues inhibitors vs sulphonylureas
Adverse events other than hypoglycaemia
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
RR 1.5 [0.86, 2.61]3 studies · 499 participantsVery low
GLP‐1 analogues inhibitors vs sulphonylureas
All‐cause mortality
Interventions for people with type 2 diabetes mellitus fasting during Ramadan (2023) · Cochrane
no estimate extractedNRNo studies