| COVID-19 | Coronavirus disease 2019 |
| MZ | Millennials and Generation Z |
| GQ-6 | Gratitude Questionnaire-6 |
| SHS | Subjective Happiness Scale |
| IRB | institutional review board |
| SPSS | Statistical Package for Social Sciences |
| VIF | variance inflation factor |
| LLCI | lower level for confidence interval |
| ULCI | upper level for confidence interval |
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