Structured population data were available for 4 of 4 supporting studies. 1 study described participants with type 2 diabetes. 3 studies described adult participants.

1 supporting study does not have a displayable topic-matched quantitative effect.

2 supporting studies have high, serious, critical, unclear, or unavailable risk-of-bias information.

1 study contains conflicting p-value and significance fields; those significance claims are suppressed.

Core clinician-reference fields are available or not applicable.

Twelve group-based sessions and two individual counselling sessions over 12 months, delivered by trained community volunteers

Co-HELP community-based lifestyle intervention

Usual care

Authoritative quality diagnostic: invalid confidence interval.

Community lifestyle programme improves multiple diabetes risk factors in adults with prediabetes

Not extracted from the authoritative source.

6-h session at baseline followed by 3-h refresher sessions at 12 and 24 mo; 15-min telephone call every 3 mo

Let's Prevent Diabetes programme (intervention)

Standard care

Engagement in a prediabetes education programme is linked to lower type 2 diabetes risk

Standard care consisting of blinded, target-driven pharmaceutical therapy and lifestyle advice

Participants received supervised resistance and aerobic exercise and individually tailored dietary plans.

U-TURN lifestyle intervention group

people with non-insulin-dependent T2D (duration <10 years), were randomly assigned (2:1, stratified by sex, from April 2015 to August 2016) to a lifestyle intervention group (n = 64) or a standard care group (n = 34)

All participants received standard care with standardized, blinded, target-driven medical therapy during the initial 12 months.

Intensive lifestyle intervention may improve type 2 diabetes remission rates

Not reported in the authoritative source.

Standard Care

Clinician-reference record is usable with limitations in: design, risk_of_bias.

Participants underwent a 24-month lifestyle intervention to improve glucose metabolism.

Intensive Lifestyle Intervention

A total of 413 participants were enrolled in TULIP, with 357 undergoing 9 months of intensive lifestyle intervention and 300 completing the full intervention after 24 months.

Participants in other clusters not receiving the intensive intervention.

We focused on cluster 3 and 5 participants, as they have the highest risk of progression to type 2 diabetes and compared them with participants in the other clusters.

Authoritative quality diagnostic: authoritative design unavailable.

Authoritative quality diagnostic: p value significance conflict.

Lifestyle intervention for prediabetes × 2-hour plasma glucose

Available supporting studies

Community lifestyle programme improves multiple diabetes risk factors in adults with prediabetes

Engagement in a prediabetes education programme is linked to lower type 2 diabetes risk

Intensive lifestyle intervention may improve type 2 diabetes remission rates

Weight loss intervention linked to diabetes risk in high-risk groups