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—In the article entitled "Regional Effects and Mechanism of Positive End-Expiratory Pressure in Early Adult Respiratory Distress Syndrome," published in the April 28, 1993, issue of THE JOURNAL (1993;269: 2122-2127), several errors occurred. The two equations in the "Results" section under "Linear g/t-P Curve" on page 2125 should read as follows: and "g/t at 0 cm H2O In the parenthetical sentences beginning in the third column on page 2126 in the second point under "SPl and PEEP" in the "Comment" section, the units g/mL3 and mL3 should be g/mL. Thus, the sentences should read as follows: "(The normal density of the lung is approximately 0.3 g/mL; in ARDS it ranges from 0.5 to 0.8 g/mL. The sternal-vertebral height in ARDS does not differ from the normal, and ranges approximately from 12 to 25 cm. Assuming a mean lung density of 0.7 g/mL in a patient with
Errors in Equations and Incorrect Units of Measurement.. JAMA. 1993;270(15):1814. doi:10.1001/jama.1993.03510150048027