Table 2

Person-years, mortality numbers and age-adjusted mortality rate (per 100 000 person-years) according to quintiles of dietary sodium-to-potassium ratio for deaths from all causes, CVDs, all stroke and stroke subtypes in a 24-year follow-up of the participants of NIPPON DATA80

Person-years1769263358135 98335 94936 12235 291
All causes1938381(502)365(521)368(493)388(568)436(640)
Ischaemic stroke15029(30)27(29)30(27)26(33)38(48)
Haemorrhagic stroke678(17)12(18)14(25)13(17)20(31)
  • Values in parentheses are age-adjusted mortality rates per 100 000 person-years for each cause of death.

  • CVD, cardiovascular disease; NIPPON DATA, National Integrated Project for Prospective Observation of Non-communicable Disease And its Trends in the Aged.