(n = 10) | |||
---|---|---|---|
A) Publication year | |||
a1 | 1991–2000 | 3 | |
a2 | 2001–2010 | 7 | |
B) Country | |||
b1 | Asia | 1 | |
b2 | Europe | 4 | |
b3 | North America | 5 | |
C) Study design | |||
c1 | Prospective study | 5 | |
c2 | Retrospective study | 4 | |
c3 | Cross sectional study | 1 | |
D) Mean/Median agea | |||
d1 | <65 yrs. | 3 | |
d2 | 66–80 yrs. | 3b | |
d3 | >80 yrs. | 4 |