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Correction to Bartalena et al., N Engl J Med 338(2):73-78 January 8, 1998.

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Volume 338:1546-1547 May 21, 1998 Number 21
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Therapy for Hyperthyroidism and Graves' Ophthalmopathy

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 by Bartalena, L.
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 by Bartalena, L.
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To the Editor: The article by Bartalena et al. (Jan. 8 issue)1 on therapy for hyperthyroidism and Graves' ophthalmopathy could be important in establishing practice precedents. Clarification of the following points is needed to define more fully the inferences readers can draw from the findings.

We think the authors should have carried out an intention-to-treat analysis of the results at one year in all patients in each group. Instead, in Table 3, the data in subgroups of patients who had no change, worsening, or improvement are shown separately. Comparisons are then made within these selected subgroups. This approach violates a . . . [Full Text of this Article]

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