Review Article
Fertility Drugs Associated with Thyroid Cancer Risk: A Systematic Review and Meta-Analysis
Table 2
Newcastle–Ottawa quality assessment of cohort studies.
| | Study | Cohort representative | Selection of nonexposed cohort | Ascertainment of exposure | Outcome negative at start | Comparable cases and controls | Outcome assessment | Duration of follow-up | Adequate follow-up | Score |
| | Ron et al. [10] | A | | A | A | A | A | A | A | 7 | | Althuis et al. [11] | A | A | A | A | A | A | A | A | 8 | | Hannibal et al. [12] | A | A | A | A | A | A | A | A | 8 | | Calderon-Margalit et al. [13] | A | A | A | A | A | A | A | A | 8 | | Yli-Kuha et al. [14] | A | A | A | A | B | A | A | A | 9 | | Reigstad et al. [17] | A | A | A | A | A | A | A | A | 8 | | Brinton et al. [18] | A | A | A | A | A | A | A | A | 8 | | Reigstad et al. [19] | A | A | A | A | B | A | A | A | 9 |
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