Table 1.
Epidemiological studies demonstrating statistically significant associations between malignant melanoma and Parkinson’s disease using confidence intervals
| Study type | Authors | Location | Number of participants | 95% Confidence Interval |
|---|---|---|---|---|
| Malignant Melanoma before Parkinson’s Disease | ||||
| Case-control | Olsen et al. [4] | Denmark | 8,090 | 1.03–2.01 |
| Cohort | Wirdefeldt et al. [5] | Sweden | 11,786 | 1.23–1.91 |
| Retrospective cohort | Dalvin et al. [2] | USA | 1,544 | 2–8.8 |
| Malignant Melanoma after Parkinson’s Disease | ||||
| Cohort | Wirdefeldt et al. [5] | Sweden | 11,786 | 1.01–2.10 |
| Retrospective cohort | Dalvin et al. [2] | USA | 974 | 2.1–6.8 |
| Cohort | Rugbjerg et al. [6] | Denmark | 20,343 | 1.09–1.80 |
| Prospective cohort | Bertoni et al. [7] | USA | 1,692 | 1.24–4.17 |