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Age-adjusted relative risks and 95% CIs for deaths from all causes, CVDs, all stroke and haemorrhagic stroke according to quintiles of dietary sodium-to-potassium ratio by using the Mantel-Haenszel method in a 24-year follow-up of NIPPON DATA80. CVD, cardiovascular disease; NIPPON DATA, National Integrated Project for Prospective Observation of Non-communicable Disease And its Trends in the Aged.
