Structured population data were available for 6 of 6 supporting studies. 3 studies described adult participants.

Evidence uses heterogeneous comparison contexts: baseline_within_group, usual_care.

4 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.

Standard care

Core clinician-reference fields are available or not applicable.

Participants received a combined diet and exercise intervention aimed at improving glycemic control.

Combined Diet and Exercise Intervention

In a 3-month randomized controlled trial involving 300 adults with PDM, the combined diet and exercise intervention significantly improved fasting blood glucose and glycated hemoglobin levels.

Participants received standard care without the intervention.

FBG levels in the C group increased relative to baseline over the 3-month period, with a change of 1.4 ± 1.8 mmol/L and p < 0.05.

Combined diet and exercise intervention improves diabetes markers in adults.

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.

Authoritative quality diagnostic: invalid or missing value.

Authoritative quality diagnostic: p value significance conflict.

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

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)

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.

MAGDA-DPP lifestyle modification programme

Postnatal lifestyle programme prevents weight gain after gestational diabetes

Women with a history of gestational diabetes receiving a structured lifestyle intervention aimed at weight reduction and diabetes prevention.

Intensive lifestyle intervention

A total of 1180 women with a recent history of GDM... were randomized to either an intensive lifestyle intervention (n = 592) or usual care (n = 588) 1–5 years postpartum.

Women with a history of gestational diabetes receiving general information about diabetes awareness and lifestyle changes without a structured program.

The women in the usual care group were given general oral and written information about diabetes awareness, dietary modification, and physical activity increase at baseline and subsequent annual visits.

Lifestyle intervention for prediabetes × Waist circumference

Available supporting studies

Combined diet and exercise intervention improves diabetes markers in adults.

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

Weight loss reduces postpartum diabetes risk in women with gestational diabetes