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Main characteristics of the population
| Study | Population (n) | Predominant sex | Follow-up time (months) | Average age (years) |
|---|---|---|---|---|
| Barbosa et al. (2016) | 41 | Female (58.5%) | 8 | 59.6 |
| Budni et al. (2013) | 42 | Not described | 18 | Between 21–70 |
| Ribeiro et al. (2010) | 41 | Not described | 6 | Not described |
| Sousa et al. (2008) | 1043 | Female (53.4%) | 65.6 | 45.8 |
| Maçao et al. (2007) | 40 | Not described | 6 | Not described |
| Rassi et al. (2002) | 10 | Female (50%) | 2 | 37.7 |
