Table 1 Inclusion/exclusion criteria for the face-to-face and digital pilot programmes

Inclusion criteria

1 Aged 18 or over

2 Registered with a GP participating in the programme

3 NDH^a defined as HbA1c^b of 42–47 mmol/mol (6·0–6·4%) or fasting plasma glucose level (FPG) of 5·5–6·9 mmol/l, measured up to 12 months prior to referral.

Exclusion criteria

1 Pregnancy

2 Diagnosis of diabetes

3 Digital programme only: underweight, defined as BMI^c<18.5. To equalise the exclusion criteria between the two groups, we excluded individuals in the face-to-face group who were underweight at the first session.