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Table 3 Summary of the annual percent changes (APCs) and joinpoints (JPs) for trends in age-standardized suicide rates by sex for England and Wales (1966-1992) and Taiwan (1987-2007)

From: Suicide epidemics: the impact of newly emerging methods on overall suicide rates - a time trends study

 

Segment 1

 

Segment 2

 

Segment 3

 

APC (95% CI)

JP 1 (95% CI)

APC (95% CI)

JP 2 (95% CI)

APC (95% CI)

Overall suicide

England and Wales (2 join points for males and one join point for females)

Male

-5.4 (-6.8, -3.9)

1972 (1971, 1975)

2.2 (1.4, 2.9)

1983 (1979, 1986)

0.0 (-0.8, 0.7)

Female

-5.4 (-7.2, -3.5)

1972 (1969, 1977)

0.6 (-0.8, 2.0)

1981 (1979, 1985)

-6.2 (-7.1, -5.2)

Taiwan (1 join point for males and females)

Male

-8.5 (-15.0, -1.5)

1992 (1989, 1994)

6.8 (5.7, 7.9)

  

Female

-11.2 (-15.0, -7.2)

1992 (1991, 1994)

5.1 (4.4, 5.8)

  

Gassing suicide

England and Wales (2 join points for males and one join point for females)

Male

-16.1 (-18.3, -13.9)

1974 (1973, 1976)

9.8 (7.0, 12.7)

1984 (1979, 1988)

4.4 (2.3, 6.7)

Female

-27.9 (-29.6, -26.2)

1975 (1974, 1976)

12.0 (7.5, 16.6)

1985 (1982, 1989)

1.3 (-3.1, 5.8)

Taiwan (1 join point for males*; join point regression not performed for females due to zero values for some of the years)

Male*

0.01 (-0.003, 0.03)

1999 (1998, 2001)

1.2 (1.0, 1.4)

  

Female

-

    

Non-gassing suicide

England and Wales (1 join point for males and females)

Male

1.0 (0.6, 1.4)

1982 (1980, 1984)

-2.0 (-2.7, -1.3)

  

Female

0.3 (-0.1, 0.8)

1981 (1980, 1983)

-7.2 (-8.1, -6.4)

  

Taiwan (2 join points for males and females)

Male

-8.0 (-11.7, -4.2)

1993 (1989, 1995)

12.7 (0.7, 26.1)

1997 (1995, 2005)

1.6 (0.2, 3.0)

Female

-10.4 (-12.5, -8.2)

1993 (1991, 1994)

10.7 (3.0, 18.9)

1997 (1996, 1999)

1.1 (0.2, 2.0)

  1. *Annual change in rates per 100,000, not annual percent change, shown.