Table 3.

Flow diagram of the searches and inclusion process

Searches:
a total of 885 potentially relevant references
↓
Inclusion step 1:
Screening based on titles and abstracts: 84 publications selected
↓
Inclusion step 2: Screening based on 108 full texts (84 full texts derived from previous step and 24 additional titles derived from reference tracking) ↓ ↓ ↓ ↓ ↓ ↓ ↓	Reasons for exclusion were: * not meeting inclusion criterion 1 (systematic review or meta-review): n = 48 * not meeting inclusion criterion 2 (guideline target-groups concern medical staff or other health professionals): n = 7 * not meeting inclusion criterion 3 (focus on factors influencing guideline implementation): n = 17 * meeting 1 or more exclusion criteria (exclusively dealing with consensus-based guidelines, not clearly differentiating between guidelines and other professional interventions, or not exclusively based on research publications): n = 23
12 review studies included (described in a total of 13 publications)