In the article "Prediction of Postdexamethasone Cortisol Levels by Serum Sodium Levels in Patients With Major Depression" (January 1986 issue, pp. 81-84) by Gary D. Tollefson, M.D., Ph.D., et al., there was an error in the final paragraph on p. 83. The sentence "For classification purposes, when a pre-DST sodium level is less than or equal to 140 meq/liter, a DST will reveal nonsuppression" should instead say "... a DST will reveal suppression." Also, in table 1, potassium at 8:00 a.m. should be 4.176 ±0.33 rather than 4.176 ±3.30. The staff regrets these errors.