Table 3.
DMFT | DT | |||||||
0 | 1–5 | 6–10 | >10 | 0 | 1–5 | 6-1 | >10 | |
1989 | 10.5 | 57.0 | 29.6 | 2.9 | 35.5 | 57.5 | 7.0 | 0.0 |
1992 | 15.6 | 54.3 | 27.3 | 2.8 | 34.3 | 55.0 | 10.7 | 0.0 |
1995 | 27.6 | 55.3 | 15.7 | 1.4 | 48.6 | 44.7 | 5.7 | 1.0 |
1999 | 38.2 | 48.9 | 11.9 | 1.0 | 46.9 | 45.2 | 7.4 | 0.5 |
2004 | 63.8 | 29.2 | 6.0 | 1.0 | 71.8 | 27.9 | 0.3 | -- |
χ2 = 12.3 p = 0.01 χ2 = 9.4 p < 0.05