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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