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November 13, 2018

Minor Errors to Power Calculation Information

JAMA. 2018;320(18):1940. doi:10.1001/jama.2018.17363

In the Original Investigation entitled “Fixed Low-Dose Triple Combination Antihypertensive Medication vs Usual Care for Blood Pressure Control in Patients With Mild to Moderate Hypertension in Sri Lanka: A Randomized Clinical Trial”1 published in the August 14, 2018, issue of JAMA, there were minor errors to the power calculation information. In the Statistical Analysis section, first sentence, “provide 90% power to detect a 12% absolute improvement” should have been “provide 90% power to detect a 12.4% absolute improvement.” In the next sentence, toward the end of the sentence, “(relative risk [RR] of 1.24)” should have been “(relative risk [RR] of 1.25).” This article was corrected online.

Webster  R, Salam  A, de Silva  HA,  et al; TRIUMPH Study Group.  Fixed low-dose triple combination antihypertensive medication vs usual care for blood pressure control in patients with mild to moderate hypertension in Sri Lanka: a randomized clinical trial.  JAMA. 2018;320(6):566-579. doi:10.1001/jama.2018.10359PubMedGoogle ScholarCrossref