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Table 3 Risk of bias (RoB2) assessments for studies included in the systematic review of the effectiveness of psychological support interventions for those exposed to mass outbreaks

From: The effectiveness of psychological support interventions for those exposed to mass infectious disease outbreaks: a systematic review

Study

Domain 1. RoB from randomization process

Domain 2: RoB due to deviations from intended interventions (effect of assignment to intervention)

Domain 2: RoB due to deviations from intended interventions (effect of adhering to intervention)

Domain 3: Missing outcome data

Domain 4: RoB in measurement of outcomes

Domain 5: RoB in selection of reported result

Overall risk of bias judgement

Al Alawi, 2021 [35]

+

?

+

+

?

+

?

Carbone, 2021 [36]

+

+

+

+

?

?

?

Dincer, 2021 [37]

?

?

+

+

+

+

?

Fiol-DeRoque, 2021 [38]

+

?

?

+

+

+

?

Gharaati Sotoudeh, 2020 [39]

?

?

–

–

?

+

_

Kong, 2020 [40]

+

?

–

+

+

+

?

Li, 2020 [41]

+

?

?

+

+

+

?

Liu, 2020 [42]

+

?

+

+

?

?

–

Liu Y, 2021(a) [43]

?

?

+

+

?

?

–

Liu Z, 2021(b) [44]

?

?

+

+

?

?

–

Malboeuf-Hurtubise, 2021 [45]

_

?

?

?

?

?

–

Ng, 2006 [46]

+

?

?

–

–

?

–

Ozlu, 2021 [47]

+

?

+

+

?

?

–

Parizad, 2021 [48]

+

?

+

+

?

?

–

Perri, 2021 [49]

?

?

+

?

?

?

–

Procaccia, 2021 [50]

?

?

+

?

?

?

–

Shabahang, 2020 [51]

+

+

+

+

?

?

?

Thombs, 2021 [52]

+

+

?

?

?

+

–

Vanden, 2021 [53]

+

+

+

+

?

+

?

Vukcevic, 2020 [54]

+

+

+

+

+

+

+

Wahlund, 2021 [55]

+

+

+

+

+

+

+

Zheng, 2021 [56]

?

?

?

+

+

+

–

  1. Key:
  2. + Low risk of bias
  3. - High risk of bias
  4. ? Some concerns