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Table 4 Sensitivity analysis of outliers based on outcomes of negative binomial regressions (only principal independent variables presented)

From: Frequencies of emergency department use and hospitalization comparing patients with different types of substance or polysubstance-related disorders

 

Frequency of emergency department (ED) use

Frequency of hospitalizations

 

Original data

Cap at 20 (≤20)

Change

Original data

Cap at 7 (≤7)

Change

 

RR

RR

(%)

RR

RR

(%)

Substance-related disorder (SRD) exclusive groups (ref.: cannabis-related disorders)

 Other drug-related disorders than cannabis

1.06

1.07

1.34

1.00

1.00

−0.16

 Alcohol-related disorders

1.11

1.11

0.25

1.38

1.37

−0.70

 Polysubstance-related disordersa

1.18

1.18

0.20

1.26

1.25

−0.06

  1. a Polysubstance-related disorders group included the following sub-groups: cannabis +other drugs-related disorders (n = 2,025), cannabis +alcohol-related disorders (n = 1,511), other drugs +alcohol-related disorders (n = 3,957), cannabis +other drugs +alcohol-related disorders (n = 2,908)
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Substance Abuse Treatment, Prevention, and Policy

ISSN: 1747-597X