Table 1.
Descriptive characteristics of the included studies
| Authors | Year | Location | Type of study | No of participants | Sleep quality assessments tools | Check list | Total score |
|---|---|---|---|---|---|---|---|
| Cremeans-Smith et al. [20] | 2006 | Ohio | Prospective | 110 | PSQI | Ottawa/cohort | ****** |
| Mehmet Serhan et al. [24] | 2014 | Turkey | Prospective | 42 | PSQI | Ottawa/cohort | ****** |
| Herrero-Sánchez et al. [8] | 2014 | Spain | Case-control | 24 case, 21 control | PSQI | Ottawa/case-control | ******** |
| Koken and Guclu [28] | 2019 | Turkey | Retrospective | 80 | PSQI | Ottawa/cohort | ******* |
| Fatah and Abdulrahman [3] | 2020 | Iraq | Prospective Cohort | 67 | PSQI | Ottawa/cohort | ******* |
| Luo et al. [29] | 2019 | China | Prospective Cohort | 994 | PSQI/ESS | Ottawa/cohort | ******* |
| Manning et al. [9] | 2017 | Chicago | Prospective | 62 | ESS | Ottawa/cohort | ***** |
| Chen et al. [5] | 2016 | Pennsylvania | Prospective | 34 | PSQI/ESS | Ottawa/cohort | ******* |