Age stratum (y) | Present study | Japan* | Korea, Taiwan, and Vietnam | |||
---|---|---|---|---|---|---|
 | T-score -2.5 | T-score -1.0 | T-score -2.5 | T-score -1.0 | T-score -2.5 | T-score -1.0 |
40–49 | 6.7 | 38.4 | 0.7 | 32.1 | ND | ND |
50–59 | 16.5 | 52.5 | 5.2 | 64.8 | ND | ND |
60–69 | 41.0 | 79.1 | 18.7 | 88.7 | ND | ND |
70–79 | 58.6 | 88.0 | 43.6 | 95.2 | ND | ND |
≥50 | 37.5 | 72.0 | ND | ND | 11.8,†20.0‡ | 26.8,‡ 56.0§ |
≥60 | 50.9 | 84.1 | ND | ND | 46.0,†50.6‡ | 61.8‡ |