. Author manuscript; available in PMC: 2020 Jun 1.

Published in final edited form as: J Biomed Inform. 2019 Apr 25;94:103185. doi: 10.1016/j.jbi.2019.103185

Table 1.

Definition of opioid overdose phenotypes

Severity	Name	Criterion/example cases	Total (n=298)

0	False positive	•Side effects (constipation, N/V)	70
		•No medical intervention
		•Inaccurate coding

1	Mild	•Overnight monitoring	65
		•Nasal oxygen
		•Activated charcoal
		•Altered mental status

2	Moderate	•Naloxone administration w/marked response	117

3	Severe	•Acute respiratory failure	46
		•Intubation
		•Death