| Type of intervention/s evaluated | ||||
| Trial-based lifestyle programme | Pragmatic lifestyle programme | Not stated | Current guidance | |
| Trial-based lifestyle or pragmatic lifestyle? | 18 trial based 3 translations of trials | 3 | 3 | UK: Pragmatic lifestyle programmes—Group lifestyle programme with 16 hours of contact time over 9–18 months and regular follow-up for up to 2 years US: Pragmatic lifestyle programmes—Counselling, coaching and extended support relating to diet and physical activity for at least 3 months provided by trained staff in clinical or community settings ADA: Intensive diet and physical activity behavioural counselling programme adhering to the tenets of the Diabetes Prevention Programme targeting a loss of 7% of body weight and an increasing moderate-intensity physical activity (such as brisk walking) to at least 150 min/week |
IFG, impaired fasting glucose; IGT, impaired glucose tolerance.
Sources: ADA: Standards of Medical Care in Diabetes,9 UK: NICE guidance,88 USA: Community Preventative Services Task Force recommendations.21
Some studies may be included in more than one category, for example, if the study took place across multiple countries or used multiple diagnostic tests.