Table 2 Traffic light criteria for the larger scale evaluation
Green light | Amber light | Red light | |
|---|---|---|---|
Recruitment — percentage of eligible participants who consent to take part | 35% who are eligible consent to participate | 15–34% who are eligible consent to participate | Less than 15% who are eligible consent to participate |
Group attendance | More than 80% of parents/carers attend the group for 6 + sessions | 30–79% of parents/carers attend the group for 6 + sessions | Fewer than 30% attend the group for 6 + sessions |
Follow-up response rate — self-complete outcomes questionnaire(s) | 70% or greater response to follow up | 50–69% response to follow-up | Less than 50% response to follow-up |
Fidelity — delivery on items described in the fidelity checklist | 70% or greater score on the checklist | 50–69% score on the checklist | Less than 50% score on the checklist |