Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Summary characteristics of included studies.
| Characteristics | No. of trials (No. of participants) |
| Eligible studies | |
| Total No. of trials (No. of participants) Median (IQR) follow-up (years) Follow-up at least 4 years Median (IQR) No. of participants Total No. of deaths Median (IQR)% women Median (IQR) age (years) |
31 (216,734) 4.6 (1.7–8.8) 16 (171,578) 382 (85, 5,883) 45,907 49 (15.45–58.44) 60.2 (54.2–67.7) |
| Country | |
| American European Asian-pacific |
17 (119,297) 9 (63,937) 5 (33,500) |
