Higher health literacy is directly correlated with a longer life, according to a new study published in the Archives of Internal Medicine. Researchers gathered health and demographic information via interviews with 3,260 Medicare patients over the age of 64, and also gave them tests to determine how well they were able to read and understand health information. After a follow-up period of approximately 5.7 years, the researchers consulted the National Death Index to determine which of the participants had died.
The health literacy test involved reading two passages and solving four mathematic problems; participants received a score from zero to 100. Those with scores of 55 or lower were defined as having inadequate health literacy; those with scores of 56 to 66 were defined as having marginal health literacy; and those with scores above 66 percent were defined as having adequate health literacy.
Researchers found that participants with inadequate health literacy were significantly more likely to die during the follow-up period than participants with adequate health literacy.
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