Table 1.
Sources and search terms.
Table 2.
List of organizations searched for grey literature.
Table 3.
Inclusion and exclusion criteria.
Fig 1.
PRISMA flow diagram.
Table 4.
Characteristics of records included in the study (n = 54).
Table 5.
Overview of records included in the study (n = 54).
Fig 2.
Number of records—Country wise.
Fig 3.
Number of sources by publication year.
Fig 4.
Terminologies used to describe study population.
Fig 5.
Categories of deafblindness represented across sources.
Fig 6.
Participation of persons with deafblindness.
Table 6.
Key findings across three groups.