Correction for McDermott et al., Circulation 101 (9) 1007-1012.

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(Circulation. 2001;104:504.)
© 2001 American Heart Association, Inc.

Correction

In the article by McDermott et al, "Asymptomatic Peripheral Arterial Disease Is Independently Associated With Impaired Lower Extremity Functioning: The Women’s Health and Aging Study," which was published in a previous issue of the Journal (Circulation. 2000;101:1007–1012), some errors were made.

This article describes the association between the ankle brachial index (ABI) and measures of upper and lower extremity functioning among participants in the Women’s Health and Aging Study who did not have exertional leg pain. An error was made in the ABI calculation for the right lower extremity. Although the higher of the 2 posterior tibial readings should have been used for ABI calculation, an error in the statistical syntax resulted in the lower posterior tibial arterial pressure being used to calculate the ABI for the right leg. The ABI for the left leg was calculated correctly. Because the 2 posterior tibial pressures readings in each leg are highly correlated, this syntax error resulted in minor changes in the right lower extremity ABI. Nonetheless, the syntax error resulted in slightly lower ABIs for the right lower extremity than the true ABI.

Results have been recalculated using the correct ABI. Using the correct ABI calculation, the prevalence of peripheral arterial disease in the population is 31% (compared with 35% reported in the published article). Other revised results are very similar to the original results; however, the actual odds ratios and relative risks differ slightly from published findings. The conclusions of the article are unchanged.

Revised results for Tables 2 and 3 follow.

View this table: [in this window] [in a new window]   Table 2. Relations Between ABI and Measures of Lower and Upper Extremity Functioning Among Women65 Years of Age Without Exertional Leg Pain

View this table: [in this window] [in a new window]   Table 3. Associations Between ABI and Measures of Upper and Lower Extremity Functioning Among Women65 Years of Age Without Exertional Leg Pain

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