Plasma osmolality in an elderly population

J Woo, R Swaminathan
Journal of Medicine 1991, 22 (2): 69-75
Plasma osmolality was calculated for 303 subjects (152 male and 151 female; mean age 70 +/- 11 years) living in the community. The distribution was normal, and it was not influenced by age, sex, smoking, alcohol intake or use of diuretics. The mean and 95% CI from this study were very close to the reference range given in the Geigy Scientific Tables. Higher values of mean plasma osmolality and wider 95% CI found in previous studies of unselected elderly subjects may simply reflect the higher prevalence of diseases in the elderly.

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