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In the article titled "A Cohort Study of the Relationship of Diabetic Retinopathy to Blood Pressure," published in the May 1995 Archives (1995;113:601-606), in Table 3 on page 603, the 95% confidence intervals for Progression to PDR in the 2nd, 3rd, and 4th diastolic blood pressure quartiles should have been 0.84-4.42, 0.81-4.27, and 1.55-6.65, respectively, for those using insulin.
Statistical Errors in Table. Arch Ophthalmol. 1996;114(1):109. doi:10.1001/archopht.1996.01100130105032