Study | Sample size, n | Mean (SD) age, y | Male, n (%) |
---|---|---|---|
Guervil et al..., 2015 [16] | 396 | 64.3 (1.7) | 198 (50.0) |
Udeani et al.., 2014 [17] | 528 | 63.6 (20.2) | 255 (48.3) |
Ramani et al, 2014 [18] | 398 | 63.5 (17.8) | 199 (50.0) |
Vasquez et al., 2015 [19] | 21 | 60 (18) | 11 (52.4) |
Casapao et al.., 2014 [20] | 92 | – | – |
Kaye et al, 2015 [21] | 40 | 61.3 (16.8) | 23 (57.5) |