| Selection | Comparability | Exposure | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Is the case definition adequate? | Representativeness of the cases | Selection of controls | Definition of controls | Study controls for relevant primary confounder | Study controls for other secondary confounders | Assessment of exposure | Same method of ascertainment for cases and controls | Non-response rate | Total | |
Kuhrt, et al. (2018) [43] | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 3 |
Zeanah, et al., (1993) [44] | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 2 |