Table 1.

Databases and research strategy.

Database	Limiters	Search Strategy
CINAHL (EBSCOhost) (date of a most recent survey: 9 January 2022)	Full text; summary available; publication date: 1 January 2016–31 December 2021; English language; peer-reviewed. Expanders—apply equivalent subjects. Search Modes—Boolean/Phrase.	S11: S1 AND S9 AND S10 S10: S7 OR S8 S9: S2 OR S3 OR S4 OR S5 S8: AB Edinburgh postnatal depression scale OR AB EPDS S7: AB perinatal depression OR TI perinatal depression S6: AB PSQI OR AB Pittsburgh-sleep-quality-index S5: AB sleep-wake disorders OR TI sleep-wake disorders S4: AB sleep problem * OR TI sleep problem * S3: AB sleep quality OR TI sleep quality S2: (MH “Sleep”) S1: (MH “Pregnancy”)
MEDLINE with full text (EBSCOhost) (date of a most recent survey: 9 January 2022)	Full text; summary available; publication date: 1 January 2016–31 December 2021; English language; peer-reviewed. Expanders—apply equivalent subjects. Search Modes—Boolean/Phrase	S11: S1 AND S9 AND S10 S10: S7 OR S8 S9: S2 OR S3 OR S4 OR S5 S8: AB Edinburgh postnatal depression scale OR TI edinburgh postnatal depression scale S7: AB perinatal depression OR TI perinatal depression S6: AB (PSQI or Pittsburgh -sleep-quality-index) OR TI (PSQI or Pittsburgh-sleep-quality-index) S5: AB sleep-wake disorders OR TI sleep-wake disorders S4: AB sleep problem * OR TI sleep problem * S3: AB sleep quality OR TI sleep quality S2: (MH “sleep quality”) S1: (MH “pregnancy”)
SCOPUS (date of most recent search: 25 January 2022)	NA	(TITLE-ABS-KEY (sleep AND quality) AND TITLE-ABS-KEY (sleep AND problem) AND TITLE-ABS-KEY (perinatal AND depression)) AND PUBYEAR > 2016 AND PUBYEAR < 2022

NA, not applicable. * Truncation made the database return results that include any ending of that root word.