Table 5 Spline regression analysis, Gastric bleeding ulcers
Males | Females | |||
|---|---|---|---|---|
Year | Coef. | 95% Conf. interval | Coef. | 95% Conf. interval |
1975 | -0.13 | -0.38 0.12 | -0.14 | -0.42 0.15 |
1980 | 0.03 | -0.14 0.07 | 0.04 | -0.005 0.09 |
1985 | 0.01 | -0.02 0.53 | 0.04 | -0.005 0.08 |
1990 | 0.07 | 0.03 0.11 | 0.08 | 0.03 0.12 |
1995 | -0.07 | -0.10 -0.03 | -0.07 | -0.11 -0.03 |
2000 | -0.12 | -0.14 -0.09 | -0.11 | -0.14 -0.08 |