Is insulin-like growth factor-1 involved in Parkinson’s disease development?

Table 2 Worldwide age-related prevalence of Parkinson’s disease

Age-related prevalence of Parkinson’s disease
Age	Female	Male	References
4–49 years	3.26 per 10,000 person-years	3.57 per 10,000 person-years	Hirsch et al. [21]
> 80 years	103.48 per 10,000 person-years	258.47 per 10,000 person-years	Hirsch et al. [21]

Age of Parkinson’s disease patients in countries with high prevalence of the disease
Country	Age general population	References
United States of America (USA)	70.5	Van Den Eeden [22]
Japan	68.7 ± 10.3	Yamawaki et al. [26]
Europe	61.6 ± 9.73	Pagano et al. [24]
China	58.7 ± 10.55	Song et al. [25]
Mexico	56.9 ± 11.8	Rodríguez-Violante et al. [23]

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