Inclusion criteriaSearch strategyAppraisal and analysis
  • Studies focused on the prevalence of mental health problems or sleep disturbances in nursing students during the COVID-19 pandemic.

  • Primary research using cohort, case–control or cross-sectional methods, and reporting the number (%) of cases.

  • Articles available in full text and published in either English or Indonesian.

  • Search took place in June 2021.

  • Used four databases—CINAHL, Embase, PubMed and Web of Science.

  • Quality judgements were made using the cross-sectional appraisal tool developed by the Joanna Briggs Institute.

  • Meta-analysis of primary research data.