The Objective Opiate Withdrawal Scale (OOWS) contains 13 physically observable signs, rated present or absent, based on a timed period of observation of the patient by a rater.
Reprinted from Handelsman, L., Cochrane, K. J., Aronson, M. J., et al. (1987) Two new rating scales for opiate withdrawal. American Journal of Drug and Alcohol Abuse, 13 (3), 293–308. By courtesy of Marcel Dekker, Inc.