Structured population data were available for 4 of 4 supporting studies. 2 studies described adult participants.

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

Evidence uses heterogeneous comparison contexts: other, usual_care.

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

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

One individual and ten group sessions focused on lifestyle changes were provided followed by six telephone sessions and two motivational letters over a period of 10 months; free physical activity sessions were offered twice a week from week four

DE-PLAN lifestyle intervention programme

Lifestyle programme linked to lasting weight loss in some adults at high diabetes risk

One individual session (60-90 min), five group sessions (90 min each), and two telephone sessions (15-20 min). Only 10% attended all sessions, 53% attended one individual + at least one group, 34% attended none.

Lifestyle intervention for prediabetes × Fasting blood sugar (FBS)

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

Lifestyle programme linked to lasting weight loss in some adults at high diabetes risk

Postnatal lifestyle programme prevents weight gain after gestational diabetes