Table 6:
Quality assessment of cohort studies
| COHORT ANALYSIS | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Citation | 1. Were the two groups similar and recruited from the same population? | 2. Were the exposures measured similarly to assign people to both exposed and unexposed groups? | 3. Was the exposure measured in a valid and reliable way? | 4. Were confounding factors identified? | 5. Were strategies to deal with confounding factors stated? | 6. Were the groups/participants free of the outcome at the start of the study (or at the moment of exposure)? | 7. Were the outcomes measured in a valid and reliable way? | 8. Was the follow up time reported and sufficient to be long enough for outcomes to occur? | 9. Was follow up complete, and if Not, were the reasons to loss to follow up described and explored? | 10. Were strategies to address incomplete follow up utilized? | 11. Was appropriate statistical analysis used? |
| Bickel 2020 | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | Unclear | Unclear | Yes |
| Chochinov 2012 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Fond 2019 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Fond 2020 – 1 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Fond 2020 – 2 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Fond 2021 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Hermann 2011 | Yes | Yes | Yes | No | No | No | Yes | Yes | Yes | Unclear | Yes |
| Huang 2018 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Kashyap 2021 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Lavin 2017 | Yes | Yes | No | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Liu 2017 | Yes | Yes | Yes | No | No | Unclear | Yes | N/A | N/A | N/A | Yes |
| Lloyd-Williams 2009 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Lloyd-Williams 2014 | Yes | es | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Martens 2013 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| McDermott 2018 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Mercadante 2019 | Yes | Yes | Yes | Yes | Yes | No | Yes | Unclear | Unclear | Unclear | Yes |
| Meyer 2003 | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | Unclear | Unclear | Yes |
| Mossman 2021 | Yes | Yes | Yes | Yes | Yes | Unclear | Yes | N/A | N/A | N/A | Yes |
| Prescott 2017 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Unclear | Unclear | Yes |
| Rodriguez-Mayoral 2020 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Unclear | Unclear | Yes |
| Spencer 2010 | Yes | Yes | Yes | Yes | Yes | Unclear | Yes | Yes | Unclear | Unclear | Yes |
| Spilsbury 2018 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | N/A | N/A | N/A | Yes |
| Viprey 2021 | Yes | Yes | Yes | Yes | Yes | N/A | Yes | N/A | N/A | N/A | Yes |