. 2019 Feb 21;10:78. doi: 10.3389/fpsyt.2019.00078

Table 1.

Risk of bias table for assessing the quality of cohort studies by using the Newcastle-Ottawa Scale.

Study	Representativenes of the exposed cohort	Selection of the non-exposed cohort	Ascertainment of exposure	Comparability of cohorts on the basis of the gender	Comparability of cohorts on the basis of the age	Assessment of outcome	Was follow-up long enough for outcomes to occur	Adequacy of follow up of cohorts
Konstantareas et al. (35)	^*	^*	^*	^*	^*	^*	^*	^*
Naito et al. (36)	^*	^*	^*	^*			^*	^*
Sasamoto et al. (37)	^*		^*	^*	^*		^*	^*
Solomon et al. (18)		^*	^*	^*	^*			^*
Guo et al. (38)		^*	^*					^*
Jalbrzikowski et al. (39)		^*	^*	^*	^*			^*
Lugnegard et al. (40)	^*	^*	^*	^*			^*	^*
de Bildt et al. (41)	^*	^*	^*	^*	^*	^*	^*	^*
Matsuo et al. (42)	^*	^*	^*	^*			^*	^*
Martinez et al. (43)	^*	^*	^*	^*	^*		^*	^*
Zhang et al. (44)	^*	^*	^*	^*	^*		^*	^*
Ota et al. (45)	^*		^*				^*	^*
Upthegrove et al. (46)			^*	^*				^*

item present. i.e., low risk of bias for for the variable considered.