Table 2 The TIDieR (Template for Intervention Description and Replication) Checklist [41]

Brief name

1

Extract the name or a phrase that describes the intervention.

Why

2

Extract any rationale, theory, or goal of the elements essential to the intervention.

What

3

Materials: extract any physical or informational materials used in the intervention, including those provided to participants or used in intervention delivery or in training of intervention providers. Provide information on where the materials can be accessed (e.g. online appendix, URL).

4

Procedures: extract each of the procedures, activities, and/or processes used in the intervention, including any enabling or support activities.

Who provided

5

For each category of intervention provider (e.g. psychologist, nursing assistant), extract their expertise, background and any specific training given.

How

6

Extract the modes of delivery (e.g. face-to-face or by some other mechanism, such as internet or telephone) of the intervention and whether it was provided individually or in a group.

Where

7

Extract the type(s) of location(s) where the intervention occurred, including any necessary infrastructure or relevant features.

When and how much

8

Extract the number of times the intervention was delivered and over what period of time including the number of sessions, their schedule, and their duration, intensity or dose.

Tailoring

9

If the intervention was planned to be personalised, titrated or adapted, then extract what, why, when, and how.

Modification

10

If the intervention was modified during the course of the study, extract the changes (what, why, when, and how).

How well

11

Planned: if intervention adherence or fidelity was assessed, extract how and by whom, and if any strategies were used to maintain or improve fidelity, extract them.

12

Actual: if intervention adherence or fidelity was assessed, extract the extent to which the intervention was delivered as planned.