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A sample survey was conducted in South Carolina to determine how income and education relate to hypertension, independently of age, race and sex. The results indicated that there was a significant inverse relationship between income and hypertension for Whites (P < 0·0001), but not for Blacks. There was also a statistically significant inverse relationship between education and hypertension for Whites (P < 0·0001) and for Blacks (P < 0·001).
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