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Table 1 Frequency of sources of referral to medical toxicology services and demographic information

From: Clinical characteristics and time trends of hospitalized methadone exposures in the United States based on the Toxicology Investigators Consortium (ToxIC) case registry: 2010–2017

Variable Frequency /mean Percent /SD
Age (year) 41.9 16.6
Dose (milligram) 111.34 121.78
Source of referral
 Emergency department (ED) 652 67.5
 Admitting Service 120 12.4
 Outside Hospital Transfer 66 6.8
 Poison center 12 1.2
 Request from another hospital service 86 8.9
 PCP or other Outpatient Treating MD 14 1.4
 Self-Referral 1 0.1
 Unknown 15 1.5
Gender
 Male 584 60.0
 Female 389 40.0
Role of medical toxicologist and location of toxicology consultation
 Attending (Inpatient) 179 19.9
 Consult (ED/Inpatient) 757 80.1
Chronicity of exposure
 Acute 411 67.7
 Acute on chronic 136 14.5
 Chronic 60 6.4
Reason for methadone use
 Withdrawal management 51 5.2
 Abuse 209 21.4
 Attempt at self-harm 508 52.2