Table 1 Segmented negative binomial regression analysis of IHD morbidity and mortality trends by sex comparing the county of Västerbotten (intervention) with three control counties (Norrbotten, Västernorrland and Jämtland) of Northern Sweden during the period 1987–2013

1.168 (1.095, 1.246)*

1.213 (1.107, 1.329)*

1.186 (1.089, 1.292)*

1.071 (0.837, 1.371)

0.949 (0.938, 0.959)*

0.954 (0.948, 0.960)*

0.925 (0.909, 0.940)*

0.954 (0.913, 0.996)*

0.969 (0.963, 0.976)*

0.976 (0.963, 0.990)*

0.950 (0.943, 0.957)*

0.965 (0.947, 0.982)*

0.979 (0.966, 0.992)*

0.978 (0.963, 0.992)*

0.973 (0.956, 0.991)*

0.989 (0.943, 1.036)

1.024 (0.944, 1.110)

0.981 (0.906, 1.061)

0.978 (0.856, 1.117)

1.004 (0.811, 1.243)

0.976 (0.973, 0.979)*

0.969 (0.964, 0.974)*

0.952 (0.945, 0.959)*

0.942 (0.930, 0.953)*

0.982 (0.977, 0.987)*

0.979 (0.976, 0.982)*

0.955 (0.948, 0.962)*

0.952 (0.947, 0.957)*

0.994 (0.989, 0.999)*

0.990 (0.984, 0.996)*

0.997 (0.987, 1.007)

0.989 (0.976, 1.002)

1.016 (1.001, 1.030)*

1.013 (0.996, 1.029)

1.024 (1.004, 1.046)*

1.000 (0.953, 1.050)