Review Article
How Electronic Cigarette Affects the Vascular System
Table 4
Risk of bias assessment of 6 animal studies using SYRCLE’s RoB.
| Criteria | El-Mahdy et al. [21] | Espinoza-Derout et al. [22] | Kuntic et al. [23] | Li et al. [24] | Olfert et al. [25] | Szostak et al. [26] |
| Random group allocation (selection bias) | Unclear | No | No | No | Unclear | Unclear | Groups similar at baseline (selection bias) | Yes | Unclear | Unclear | Unclear | Yes | Yes | Blinded group allocation (selection bias) | No | No | No | No | No | No | Random housing (performance bias) | No | No | No | No | No | No | Blinded intervention (performance bias) | Unclear | Unclear | Unclear | Unclear | Unclear | Unclear | Random outcome assessment (detection bias) | Unclear | Unclear | Unclear | Unclear | Unclear | Unclear | Blinded outcome assessment (detection bias) | No | No | No | No | No | No | Reporting of drop-outs (attrition bias) | Yes | Yes | Yes | Yes | Yes | Yes | Selective outcome reporting | Yes | Yes | Yes | Yes | Yes | Yes | Other biases | Yes | Yes | Yes | Yes | Yes | Unclear |
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Notes: In the SYRCLE’s RoB, ‘Yes’ indicates low risk of bias; No indicates high risk of bias; ‘Unclear’ indicates unclear risk of bias.
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