Table 2.
Demographic characteristics of study subjects
| Sample | AMD | Control | p Value |
|---|---|---|---|
| Japan | |||
| Subjects | 229 | 236 | |
| Female, n (%) | 57 (24.8%) | 161 (67.9%) | |
| Agea range (years) | 51–92 | 50–90 | |
| Mean age ± SD (years) | 74.8 ± 8.8 | 75.4 ± 7.3 | 0.63 |
| Japan blood sample | |||
| Subjects | 44 | 29 | |
| Female, n (%) | 11 (25%) | 17 (58.6%) | |
| Age range (years) | 53–90 | 62–88 | |
| Mean age ± SD (years) | 76.7 ± 7.0 | 76.9 ± 7.1 | 0.91 |
| India | |||
| Subjects | 91 | 99 | |
| Female, n (%) | 25 (27.4%) | 52 (52.5%) | |
| Age range (years) | 44–91 | 45–91 | |
| Mean age ± SD (years) | 68.0 ± 8.8 | 68.0 ± 8.8 | 0.97 |
| Australia | |||
| Subjects | 76 | 31 | |
| Female, n (%) | 46 (60.5%) | 18 (58.1%) | |
| Age range (years) | 70–102 | 69–95 | |
| Mean age ± SD (years) | 88.9 ± 7.7 | 85.5 ± 7.5 | 0.11 |
| USA | |||
| Subjects | 82 | 115 | |
| Female, n (%) | 34 (45.9%) | 30 (40.5%) | |
| Age range (years) | 52–97 | 50–96 | |
| Mean age ± SD (years) | 80.4 ± 10.3 | 79.3 ± 11.1 | 0.06 |
| Combined | |||
| Subjects | 470 | 447 | |
| Female, n (%) | 162 (34.5%) | 261 (58.3%) | |
| Age range (years) | 45–102 | 45–97 | |
| Mean age ± SD (years) | 75.6 ± 11.1 | 75.12 ± 9.2 | 0.52 |
SD, standard deviation.
p Value of Indian samples was obtained from unpaired t test (two-tailed); the others were obtained from Mann–Whitney test (two-tailed).
a
Age of presentation.