Table 1 Newcastle-Ottawa quality assessment scale of included studies
Author (year) | Selection | Comparability | Outcome | |||||
|---|---|---|---|---|---|---|---|---|
Representativeness of the exposed cohort | Selection of the non-exposed cohort | Ascertainment of exposure | Demonstration that outcome of interest was not present at start of study | Comparability of cohorts on the basis of the design or analysis | Assessment of outcome | Was follow-up long enough for outcomes to occur | Adequacy of follow-up of cohorts | |
Ahlquist et al. (2020) [16] | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 |
Hamidi et al. (2019) [17] | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 0 |
Worley et al. (2008) [18] | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 0 |
Spinal Cord Injury Thromboprophylaxis Investigators. (2003) [19] | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
Thumbikat et al. (2002) [20] | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |