Country | Location of joinpoint (95% CI) | p Value | Average change per decade before JP, per 100 000 person-years (95% CI)† | Average change per decade after JP, per 100 000 person-years (95% CI)† |
---|---|---|---|---|
Denmark | 1976 (1968 to 2006) | <0.05 | 0.26 (0.03 to 0.49) | 0.61 (0.51 to 0.72) |
Finland | 1982 (1975 to 1987) | <0.0001 | −0.01 (−0.07 to 0.04) | 0.45 (0.39 to 0.52) |
Norway | 1987 (1985 to 1990) | <0.0001 | 0.05 (0.01 to 0.10) | 0.79 (0.71 to 0.88) |
Sweden | 1991 (1989 to 1994) | <0.0001 | 0.12 (0.08 to 0.16) | 0.74 (0.64 to 0.83) |
USA: New Mexico | 2004 (−) | NS | 0.85 (0.71 to 1.00) | −0.99 (−4.18 to 2.20) |
USA: San Francisco | 1996 (−) | NS | 0.79 (0.64 to 0.94) | 0.18 (−0.20 to 0.57) |
USA: Utah | 1986 (1980 to 1993) | <0.005 | 0.13 (−0.37 to 0.63) | 1.06 (0.83 to 1.29) |
* Analysis was conducted using the joinpoint regression program supplied by the National Cancer Institute. The analyses were conducted on an absolute scale, restricted to a maximum of one joinpoint. p Values and CIs were based on permutation tests comparing models with the best-fitting joinpoint to models with no joinpoint. NS denotes not significant.
† Estimates on average incidence change are given on additive scale. Thus, for each additional 10-year period after 1986, we would expect an additional 1.06 cases per 100 000 person-years in Utah.