Table 1

Number of suicides and associations between the population density and suicide rates of 214 districts during 1992–1997, 1998–2002, 2003–2007 and 2008–2012

1992–19971998–20022003–20072008–2012
nIRR(95% CI)nIRR(95% CI)nIRR(95% CI)nIRR(95% CI)
Both sexes*22 9210.913(0.904 to 0.920)34 9510.904(0.897 to 0.911)53 4990.939(0.933 to 0.945)71 6840.954(0.948 to 0.960)
Men†15 7820.907(0.898 to 0.918)24 6080.902(0.894 to 0.911)36 4880.935(0.929 to 0.942)46 9820.944(0.938 to 0.951)
Women†71390.919(0.906 to 0.933)10 3430.907(0.896 to 0.919)17 0110.945(0.935 to 0.955)24 7020.972(0.962 to 0.982)
  • *The effects of age (5-year age band) and sex were adjusted.

  • †The effects of age (5-year age band) were adjusted.

  • IRR, incidence rate ratio.