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The Matrix Model The Matrix Model Treatment Approach for Treatment Approach for Methamphetamine Methamphetamine Dependence Dependence Michael J. McCann, MA Michael J. McCann, MA Matrix Institute on Addictions Matrix Institute on Addictions Arlington, VA Arlington, VA May 9, 2006 May 9, 2006

The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

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Page 1: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

The Matrix Model The Matrix Model Treatment Approach for Treatment Approach for

Methamphetamine Methamphetamine DependenceDependence

Michael J. McCann, MAMichael J. McCann, MAMatrix Institute on AddictionsMatrix Institute on AddictionsArlington, VAArlington, VAMay 9, 2006May 9, 2006

Page 2: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

OverviewOverview

Methamphetamine effects on the brainMethamphetamine effects on the brain Treatment approaches in light of brain Treatment approaches in light of brain

effectseffects The Matrix Model treatment approachThe Matrix Model treatment approach Does methamphetamine treatment Does methamphetamine treatment

work? work?

Page 3: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

A Major Reason People Take a Drug is they Like

What It Does to Their Brains

A Major Reason People Take a Drug is they Like

What It Does to Their Brains

Meth Treatment is Meth Treatment is ChallengingChallenging

Page 4: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

00

5050

100100

150150

200200

00 6060 120120 180180Time (min)Time (min)

% o

f B

asal

DA

Ou

tpu

t%

of

Bas

al D

A O

utp

ut

NAc shellNAc shell

EmptyEmpty

BoxBoxFeedingFeeding

Source: Di Chiara et al.Source: Di Chiara et al.

FOODFOOD

100100

150150

200200

DA

Co

nce

ntr

ati

on

(%

Bas

elin

e)D

A C

on

cen

tra

tio

n (

% B

asel

ine)

MountsMountsIntromissionsIntromissionsEjaculationsEjaculations

1515

00

55

1010

Co

pu

latio

n F

req

ue

nc

yC

op

ula

tion

Fre

qu

en

cy

SampleNumberSampleNumber

11 22 33 44 55 66 77 88 99 10101111121213131414151516161717

ScrScrScrScrBasBasFemale 1 PresentFemale 1 Present

ScrScrFemale 2 PresentFemale 2 Present

ScrScr

Source: Fiorino and PhillipsSource: Fiorino and Phillips

SEXSEX

Natural Rewards Elevate Dopamine Natural Rewards Elevate Dopamine LevelsLevels

Natural Rewards Elevate Dopamine Natural Rewards Elevate Dopamine LevelsLevels

Page 5: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

00100100200200300300400400500500600600700700800800900900

1000100011001100

00 11 22 33 44 5 hr5 hrTime After AmphetamineTime After Amphetamine

% o

f B

as

al

Re

lea

se

% o

f B

as

al

Re

lea

se

DADADOPACDOPACHVAHVA

AccumbensAccumbens AMPHETAMINEAMPHETAMINE

00

100100

200200

300300

400400

00 11 22 33 44 5 hr5 hrTime After CocaineTime After Cocaine

% o

f B

as

al

Re

lea

se

% o

f B

as

al

Re

lea

se

DADADOPACDOPACHVAHVA

AccumbensAccumbens COCAINECOCAINE

00

100100

150150

200200

250250

00 11 22 33 44 5hr5hrTime After MorphineTime After Morphine

% o

f B

as

al

Re

lea

se

% o

f B

as

al

Re

lea

se AccumbensAccumbens

0.50.51.01.02.52.51010

Dose (mg/kg)Dose (mg/kg)MORPHINEMORPHINE

00

100100

150150

200200

250250

00 11 22 3 hr3 hrTime After NicotineTime After Nicotine

% o

f B

as

al

Re

lea

se

% o

f B

as

al

Re

lea

se

AccumbensAccumbensCaudateCaudate

NICOTINENICOTINE

Source: Di Chiara and ImperatoSource: Di Chiara and Imperato

Effects of Drugs on Dopamine LevelsEffects of Drugs on Dopamine LevelsEffects of Drugs on Dopamine LevelsEffects of Drugs on Dopamine Levels

Page 6: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Prolonged Drug Use ChangesProlonged Drug Use Changesthe Brain In Fundamentalthe Brain In Fundamentaland Long-Lasting Waysand Long-Lasting Ways

Meth Treatment is Meth Treatment is ChallengingChallenging

Page 7: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Source: McCann U.D.. et al.,Journal of Neuroscience, 18, pp. 8417-8422, October 15, 1998.

Decreased dopamine transporter Decreased dopamine transporter binding in METH users binding in METH users

resembles that inresembles that in Parkinson’s Disease patients Parkinson’s Disease patients

Control Meth PDAvg. 3 yrs. abstinent

Page 8: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006
Page 9: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

““This is your Brain on This is your Brain on Meth”Meth”

Dr. Paul Thompson of UCLA; brain mapping Dr. Paul Thompson of UCLA; brain mapping study. study.

Meth users in their 30s with 10 years of use.Meth users in their 30s with 10 years of use. 11% loss in brain pleasure/reward center 11% loss in brain pleasure/reward center

tissue.tissue. He described “a forest fire” of brain damage.He described “a forest fire” of brain damage. Navigating through daily life and applying Navigating through daily life and applying

what is learned in treatment may be difficult what is learned in treatment may be difficult (reminders, simplicity, redundancy)(reminders, simplicity, redundancy)

Page 10: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Meth in the BrainMeth in the Brain

Page 11: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006
Page 12: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006
Page 13: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006
Page 14: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006
Page 15: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Methamphetamine: Methamphetamine: Neurochemical Neurochemical

MechanismsMechanisms

Enters dopamine vesiclesEnters dopamine vesicles Vesicles deplete themselves of Vesicles deplete themselves of

dopaminedopamine

Page 16: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

METH

METH

Page 17: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

METH

METH

Page 18: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Meth Treatment is Meth Treatment is ChallengingChallenging

Prolonged meth use changes the Prolonged meth use changes the brainbrain

Prolonged effects require Prolonged effects require appropriate treatment approaches appropriate treatment approaches

Page 19: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Effective Treatments for Effective Treatments for Methamphetamine Methamphetamine

DependenceDependence

Page 20: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

The Matrix InstituteThe Matrix Institute

Established 1984Established 1984 5 clinics in Southern California5 clinics in Southern California San Bernardino County 1985; >50% San Bernardino County 1985; >50%

meth usersmeth users

Page 21: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Some Core Some Core Elements of the Elements of the Matrix ModelMatrix Model

Page 22: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Elements of Effective Elements of Effective TreatmentTreatment

with Methamphetamine with Methamphetamine Users Users

Focus on the present; behavior vs Focus on the present; behavior vs feelingsfeelings

Structure: 3 X week meetings; 16 Structure: 3 X week meetings; 16 weeksweeks

Information on addiction and recoveryInformation on addiction and recovery Teach relapse preventionTeach relapse prevention Urine testingUrine testing Introduce and encourage self-helpIntroduce and encourage self-help

Page 23: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Matrix Program Schedule Matrix Program Schedule (Sample)(Sample)

Monday Wednesday

Friday

Weeks 1-4

Early Recovery Skills Weeks 1-12Family/Education

Weeks 1-4

Early Recovery Skills

Weeks 1-16 Relapse Prevention Weeks 13-16

Social Support

Weeks 1-16 Relapse Prevention

Urine and breath alcohol tests once per week, weeks 1-16Ten Individual/Conjoint sessions during 1st 16 weeks

Page 24: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Simple, redundant, & relevant Simple, redundant, & relevant informationinformation

Classical conditioning and Classical conditioning and cravingcraving

The brain and addictionThe brain and addiction

Page 25: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Information: ConditioningInformation: Conditioning

Pavlov’s Dog

Page 26: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Information: ConditioningInformation: Conditioning

Pavlov’s Dog

Page 27: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Conditioning Process During Conditioning Process During AddictionAddiction

Social Phase

Triggers•Parties•Special Occasions

Responses•Pleasant Thoughts about AOD•No Physiological Response•Infrequent Use

Strength of Conditioned Connection

Mild

Page 28: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Development of Craving Development of Craving ResponseResponseAddiction Phase

Thinking of Using

Mild Physiological Response

Entering Using Site

Heart Rate

Breathing Rate

Energy

Adrenaline Effects

Powerful Physiological Response

Use of AODs AOD Effects

Heart Rate

Breathing Rate

Energy

Adrenaline Effects

Heart

Blood Pressure

Energy

Page 29: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Cognitive Process During Cognitive Process During AddictionAddiction

Disenchantment Phase

Social Currency

Occasional Euphoria

Relief From Lethargy

Relief From Stress

Nose Bleeds

Infections

Relationship Disruption

Family Distress

Impending Job Loss

Page 30: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Conditioning and the Brain: Conditioning and the Brain: Message to PatientsMessage to Patients

Will power, good intentions are not Will power, good intentions are not enoughenough

Behavior needs to changeBehavior needs to change Insight will not affect cravingsInsight will not affect cravings

Deal with cravings: avoid triggersDeal with cravings: avoid triggers Deal with cravings: thought-stoppingDeal with cravings: thought-stopping SchedulingScheduling

Page 31: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Treatment: Information & Treatment: Information & PersuasionPersuasion

DRUG

Page 32: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Early Recovery Skills GroupEarly Recovery Skills Group

Drug cessationDrug cessation Identify triggersIdentify triggers Get rid of paraphernaliaGet rid of paraphernalia Avoid triggers-schedule timeAvoid triggers-schedule time Thought-stopping for cravingsThought-stopping for cravings 12-step introduction12-step introduction

Page 33: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Matrix Model Key Matrix Model Key ComponentComponent

Information

The Roadmap to Recovery

Page 34: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Information: Roadmap for Information: Roadmap for RecoveryRecovery

•Withdrawal

•Early Abstinence, Honeymoon

•Protracted Abstinence, the Wall

•Adjustment/Resolution

Page 35: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Information: the WallInformation: the Wall

Protracted Abstinence: “The Wall”Protracted Abstinence: “The Wall”

45-120 days after last use45-120 days after last use

Page 36: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006
Page 37: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Partial Recovery of Brain from Methamphetamine After Abstinence

Normal Control METH Abuser(1 month abstinent)

METH Abuser(14 months abstinent)

0

3

ml/gm

Source: Volkow, ND et al., Journal of Neuroscience 21, 9414-9418, 2001.

Dopamine improvements after 1 year, but not cognitive and motor functioning

Page 38: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Roadmap for RecoveryRoadmap for Recovery

Return to Old BehaviorsAnhedonia

AngerDepression

Emotional Swings

Unclear Thinking

Isolation

Family Problems

Cravings Return

Protracted Abstinence

Abstinence Violation

Page 39: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

The WallThe Wall

Treatment implicationsTreatment implications SimpleSimple RedundantRedundant Frequent visits for an extended periodFrequent visits for an extended period

Message to patientsMessage to patients It takes a while for your brain to healIt takes a while for your brain to heal Don’t make mistakes explaining your Don’t make mistakes explaining your

feelingsfeelings Be patient; Don’t give upBe patient; Don’t give up

Page 40: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Relapse Prevention Relapse Prevention GroupsGroups

Relapse PreventionRelapse Prevention Patients need to develop new Patients need to develop new

behaviorsbehaviors Learn to monitor signs of Learn to monitor signs of

vulnerability to relapsevulnerability to relapse Recovery is more than not using Recovery is more than not using

D.O.C.D.O.C. Recovery is more than not using Recovery is more than not using

drugs and alcoholdrugs and alcohol

Page 41: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Relapse Prevention Relapse Prevention TopicsTopics

Relapse PreventionRelapse Prevention Overview of the concept; things don’t “just Overview of the concept; things don’t “just

happen”happen” Using BehaviorUsing Behavior

Old behaviors need to changeOld behaviors need to change Re-emergence signals relapse risk (it’s a duck)Re-emergence signals relapse risk (it’s a duck)

Relapse JustificationRelapse Justification ““Stinking thinking”Stinking thinking” Recognize and stopRecognize and stop

Page 42: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Relapse Prevention Relapse Prevention TopicsTopics

Dangerous EmotionsDangerous Emotions Loneliness, anger, deprivationLoneliness, anger, deprivation

Be Smart, not StrongBe Smart, not Strong Avoid the dangerous people and placesAvoid the dangerous people and places Don’t rely on will powerDon’t rely on will power

Avoiding Relapse DriftAvoiding Relapse Drift Identify “mooring lines”Identify “mooring lines” Monitor driftMonitor drift

Page 43: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Relapse Prevention Relapse Prevention TopicsTopics

Total AbstinenceTotal Abstinence Other drug/alcohol use impedes recovery Other drug/alcohol use impedes recovery

growthgrowth Development of new dependencies is possibleDevelopment of new dependencies is possible

Taking Care of BusinessTaking Care of Business Addiction is full-timeAddiction is full-time Normal responsibilities often neglectedNormal responsibilities often neglected

Taking Care of YourselfTaking Care of Yourself Health, groomingHealth, grooming New self-imageNew self-image

Page 44: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Relapse AnalysisRelapse Analysis

Session to be done when relapse Session to be done when relapse occurs after a period of sobrietyoccurs after a period of sobriety

Functional analysisFunctional analysis

Continued drug use is better Continued drug use is better addressed with Early Recovery topicsaddressed with Early Recovery topics

Relapse should be framed as learning Relapse should be framed as learning experience for clientexperience for client

Page 45: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Relapse and SexRelapse and Sex

Page 46: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

My sexual My sexual drivedrive is increased by the is increased by the use of …use of …

18.1 20.5

43.9

70.655.3

11.1

85.3

55.6

0102030405060708090

100

Per

cent

Res

pond

ing

"Yes

"

opiates alcohol cocaine meth

Primary Drug of Abuse

malefemale

(Rawson et al., 2002)

Page 47: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

My sexual My sexual pleasurepleasure is enhanced by is enhanced by the use of …the use of …

16.0 18.224.4

38.244.7

11.1

73.5 66.7

0102030405060708090

100

Per

cent

Res

pond

ing

"Yes

"

opiates alcohol cocaine meth

Primary Drug of Abuse

malefemale

(Rawson et al., 2002)

Page 48: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

My sexual My sexual performanceperformance is improved by is improved by the use of …the use of …

19.115.9

24.432.4

18.411.1

58.8 61.1

0102030405060708090

100

Per

cent

Res

pond

ing

"Yes

"

opiates alcohol cocaine meth

Primary Drug of Abuse

malefemale

(Rawson et al., 2002)

Page 49: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Other Components of Other Components of the the

Matrix ModelMatrix Model Family Education LectureFamily Education Lecture Conjoint SessionsConjoint Sessions Urine TestingUrine Testing Self Help InitiationSelf Help Initiation

Page 50: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Matrix ModelMatrix ModelUrinalysis And Breath Urinalysis And Breath

TestingTesting

Method for Monitoring Treatment ProgressTreatment Accountability

Assistance for Patient

Reduces Arguments

Provides Data for Family or Employer

Page 51: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

The “5%” MythThe “5%” Myth

Myth: Only 5% of meth users are Myth: Only 5% of meth users are successful in treatmentsuccessful in treatment

Does treatment work? Does treatment work? Fact: Some treatments workFact: Some treatments work Evidence-based treatments Evidence-based treatments

Motivational InterviewingMotivational Interviewing Contingency ManagementContingency Management Cognitive/Behavioral Treatment (Matrix Cognitive/Behavioral Treatment (Matrix

Model)Model)

Page 52: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

The “5%” MythThe “5%” Myth

Wide dissemination may be self-Wide dissemination may be self-fulfillingfulfilling Communities won’t support treatment Communities won’t support treatment Funders won’t fund treatmentFunders won’t fund treatment Meth users won’t enter treatmentMeth users won’t enter treatment Practitioners won’t expect treatment to Practitioners won’t expect treatment to

workwork

Page 53: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Comparison of Meth and Comparison of Meth and Cocaine UsersCocaine Users

Rawson et al., 2000, Journal of Rawson et al., 2000, Journal of Psychoactive DrugsPsychoactive Drugs

500 methamphetamine users500 methamphetamine users 224 cocaine users224 cocaine users Matrix San Bernardino Matrix San Bernardino

CountyCounty Identical program and staffIdentical program and staff

Page 54: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Comparison of Meth and Comparison of Meth and Cocaine UsersCocaine Users

Rawson et al., 2000, Journal of Rawson et al., 2000, Journal of Psychoactive DrugsPsychoactive Drugs Identical treatment outcomesIdentical treatment outcomes

Mean Weeks in Treatment

17.1 18

0

4

8

12

16

20

24

Weeks in Treatment

Wee

ks MethCocaine

% Clean Urines

81% 87%

0%

20%

40%

60%

80%

100%

% Clean Urines

MethCocaine

Page 55: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Matrix Model vs TAUMatrix Model vs TAURawson et al., 2004, AddictionRawson et al., 2004, Addiction

978 Methamphetamine users seeking 978 Methamphetamine users seeking treatment treatment

CSAT multi-site study; 1998-2002CSAT multi-site study; 1998-2002 Costa Mesa; San Diego; Hayward; Concord; Costa Mesa; San Diego; Hayward; Concord; San Mateo; Billings; HonoluluSan Mateo; Billings; Honolulu

Matrix Model vs Treatment as UsualMatrix Model vs Treatment as Usual Random assignmentRandom assignment

Page 56: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Baseline DemographicsBaseline Demographics

AgeAge MaleMale EducationEducation Meth useMeth use Marijuana useMarijuana use Alcohol useAlcohol use

32.8 years32.8 years

55%55%

12.2 years12.2 years

7.5 years7.5 years

7.2 years7.2 years

7.6 years7.6 years

Page 57: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Route of Methamphetamine UseRoute of Methamphetamine Use

24%

11%

64%

0%

10%

20%

30%

40%

50%

60%

70%

Route of Administration

Per

cent

Usi

ng b

y R

oute

nasalsmokeiv

Page 58: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Weeks in TreatmentWeeks in Treatment

5

8.2

0

1

2

3

4

5

6

7

8

9

Matrix TAU

Wee

ks

**

Page 59: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Weeks Continuous AbstinenceWeeks Continuous Abstinence

3

6

0

1

2

3

4

5

6

7

Matrix TAU

Wee

ks

**

Page 60: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Mean Number of UA’s that Mean Number of UA’s that werewere

MA-free during treatmentMA-free during treatment

0

2

4

6

8

10 MatrixTAU

Page 61: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Mean Number of Weeks in Treatment

02468

1012

SITE

mea

n nu

mbe

r of

vis

its MatrixTAU

Page 62: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

11.3

4.3 4.4

0

2

4

6

8

10

12

Matrix

Day

s

Baseline

Discharge

6-month FU

Self-report of MA use during the past 30 daysat baseline, discharge, and 6-month follow-up.

Page 63: The Matrix Model Treatment Approach for Methamphetamine Dependence Michael J. McCann, MA Matrix Institute on Addictions Arlington, VA May 9, 2006

Urine Results: % Meth-Urine Results: % Meth-freefree

66%69%

59%

25%30%35%40%45%50%

55%60%65%70%75%

Matrix

% m

eth-

free

Discharge6 months12 months