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Table 2 Quality assesment of the included studies using Newcastle Ottawa Scale

From: Impact of COVID-19 on adolescents’ mental health: a systematic review

Type of study

Selection

Comparability

Outcome

Total

Oosterhoff et al. [15]

****

*

**

7

Seçer and Ulaş [16]

****

*

**

7

Zhou et al. [11]

****

*

***

8

Qu et al. [14]

****

*

**

7

  1. Each * represents a point for fulfilling the NOS criteria