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Distribution of atrial fibrillation effect on quality of life (AFEQT) composite score, by income. Bar graph relating composite AFEQT score to income as a categorical variable. Graded relationship with lower annual income associated with inferior health-related quality of life. Error bars represent SD. BMI, body mass index; CHF, congestive heart failure; HTN, hypertension; S-TOFHLA, short-test of functional health literacy in adults.
