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Table 3 Spline regression analysis, Gastric perforated ulcers

From: Decreasing incidence of peptic ulcer complications after the introduction of the proton pump inhibitors, a study of the Swedish population from 1974–2002

  Males   Females  
Year Coef. 95% Conf. interval Coef. 95% Conf. interval
1975 -0.14 -0.41
0.13
0.03 -0.19
0.25
1980 0.01 -0.04
0.05
0.06 0.03
0.10
1985 0.01 -0.03
0.05
0.04 0.01
0.08
1990 0.04 -0.001
0.08
0.03 -0.003
0.06
1995 -0.07 -0.1
-0.03
-0.02 -0.05
0.01
2000 -0.08 -0.11
-0.05
-0.10 -0.12
-0.07