VA categories?

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00Analysis of the subjects' health and, when appropriate, death records showed that the death rate was significantly increased-01del00three times higher02del00-for those whose vision measured 20/40 or worse, after the data were adjusted for age, gender, hypertension, diabetes, smoking, heart attack, and stroke. Cause of death differed among01b00 VA categories02b00; for example, cancer was the leading cause in people with normal vision. The researchers speculated that compromised vision could have contributed to fatal falls and accidents and reduced other quality of life and health factors that impact mortality.02br
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00 VA categories = ?00 0-