| Abbreviation | Definition |
| CINAHL | Cumulative Index to Nursing and Allied Health Literature |
| CI | Confidence Interval |
| FoMO | Fear of Missing Out |
| I2 | Higgins’ heterogeneity index |
| JBI | Joanna Briggs Institute |
| NMP-Q | Nomophobia Questionnaire |
| PSQI | Pittsburgh Sleep Quality Index |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| PROSPERO | International Prospective Register of Systematic Reviews |
| SAS | Smartphone Addiction Scale |
| SAS-SV | Smartphone Addiction Scale–Short Version |
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