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. 2018 Jan 5;13(1):e0190521. doi: 10.1371/journal.pone.0190521

Table 1. Characteristics of the study population.

Number (%)
Total study population 931945
Male 417190 (45)
Female 514755 (55)
Median (IQR) age at start of follow-up (years) 70.2 (65.0–78.2)
Median (IQR) age at end of follow-up (years) 77.1 (70.3–84.4)
Median (IQR) follow-up time (years) 5.0 (2.2–8.5)
Total follow-up time (person years) 4,857,433