| MTD < 1 cm | MTD > 1 cm | P |
---|---|---|---|
Overall | 3245 (29.6) | 7734 (70.4) | Â |
Sex | |||
 Male | 762 (26.2) | 2142 (73.8) | < 0.001 |
 Female | 2483 (30.7) | 5592 (69.3) | |
Age (year) | |||
 < 20 | 7 (4.1) | 162 (95.9) | < 0.001 |
 20- | 887 (23.9) | 2826 (76.1) | |
 40- | 2046 (34.3) | 3913 (65.7) | |
 60- | 305 (26.9) | 830 (73.1) | |
Period | |||
 1972–1985 | 0 | 73 (100.0) | < 0.001 |
 1986–1999 | 3 (0.4) | 792 (99.6) | |
 2000–2014 | 3242 (32.1) | 6869 (65.3) |