Table 1.

Search terms and strategy used in PubMed, Scopus, and MEDLINE.

(1)	burden* OR caregiver burden* OR burnout OR exhaustion OR strain OR overload* OR frustrate* OR stress
(2)	caregiver* OR informal caregiver OR family caregiver OR carer*
(3)	mental* OR mental illness OR mental disorder OR mental issues OR schizophrenia OR psychiatric disorder OR psych* problem OR mental health OR bipolar disorder OR substance abuse OR psychiatric illness OR depression OR anxiety OR psychotic disorder OR obsessive-compulsive disorder OR behaviour disorder OR behavioural disorder

Note. truncation technique* for SCOPUS and PubMed.