Screening criteria
| Stage 1: Title and abstract |
| Inclusion criteria |
| English language version available |
| Research study (ie, not a report/educational paper) |
| Research addresses literacy in the target population |
| Research addresses health in the target population |
| Published from 2008–date (last 15 years) |
| Stage 2: full text | |
| Inclusion criteria | Exclusion criteria |
| Some or all of the research was performed in an OECD country | Solely examines ‘digital literacy’ or ‘health literacy’ and does not address ‘functional literacy’ (the ability to read and write) |
| Attempts to relate literacy in the target population to a subjective or demonstrable health impact | Only examines language barriers and not literacy |
| Described methods and findings | No attempt to relate literacy in the target population to a perceived or demonstrable health impact |
OECD, Organisation for Economic Co-operation and Development.