CBT for Hearing Voices

advertisement

CBT for Hearing

Voices

AOT

Dr Rozmin Halari, Natalia Petros

&

RISE Ealing Assertive Outreach Team

Ealing AOT

 Caseload 100

 London Borough of Ealing

 Multi cultural and ethnic backgrounds

 Team approach

……Unified & Proactive: All team members are involved in supporting all AOT service users. The approach helps with engagement….provides intensive support

….. High frequency of contact with the team strengthens engagement process….

Why a CBT group?

Service needs

 One psychologist in the team

 Increased need/not being able to meet the demand

 Group

 Cost effective

 Positive effects of group

 Needs assessment

 -Care coordinators

 -Clients/Carers

 44% were identified

Setting up the group

 Team decision

 Service user/carer involvement (needs assessment)

 Enables:

 Ownership

Support participation

Hearing voices

 Common symptom of psychosis (also present in non clinical populations)

 Over 60% experience hearing voices

 Anti psychotics- front line treatment

 25% to 50% continue to hear voices

 Limitations

Non compliance

Persistent residual positive symptoms

Seek other interventions

Existing interventions/groups

 Service user led- support groups

 E.g. Hearing Voices Network

CMHT’s- CBT for psychosis

Nature of clients

Selected group (In terms of cognitive abilities)

 AOT

Difficult to engage

Non compliant/revolving door

Treatment resistant

No evidence of HVG in AOT

Why a CBT group

Evidence Base I

 Individual CBT- effective positive and negative symptoms (Wykes et al., 2005)

Not widely accessible for schizophrenia

Group approach – efficient, cost effective way of delivering this intervention

 Few formal evaluations of a group approach.

 Although positive results - uncontrolled

Why a CBT group

Evidence Base II

 Group based CBT for AH:

 Improvement Severity of hallucinations (Wykes et al., 1999; Wykes et al.,

2005; Drury et al., 1996)

Improvement Social functioning (Wykes et al., 2005)

Increase Insight (Wykes et al., 1999)

Lower depression (Gledhill et al., 1998)

Reduce negative beliefs about hearing voices

(Pinkham et al., 2004)

Reduce distress related to hearing voices (Perlman and Hubbard, 2000;

Newton et al. 2005)

Better coping (Gledhill et al., 1998, Falloon and Talbot, 1981)

 Positive effects maintained;

 6 months follow up (Wykes et al., 2005)

Evidence base III

Penn et al. (2009) CBT vs enhance supportive therapy

Randomly allocated 65 patients

 Group CBT (for HV)

 Chronically ill group with SZ

Reduce negative beliefs about voices (and severity)

Reduce distress related to HV

Reduce overall symptoms and HV

Increase insight

Assessment

 Assessment

Brief history

Experience of groups

Assessment of voices

Neuropsychological impairments

Positive and negative syndrome scale (PANSS, Kay et al.,

1989)

Previous psychology input

 Letter sent with care-coordinator

Accepting clients

If not reasons explained

Inclusion criteria

 ICD-10 criteria for schizophrenia, schizoaffective disorder and bipolar disorder

 Persistent and distressing AH (score 3 or above on hallucination item of PANSS; Kay et al., 1989)

 Over 18 years

 No substance misuse or medical disorder contributing to symptoms

 No medication change planned

Exclusion criteria

 Continued use of illegal substances known to affect symptoms

 Alcohol misuse

Group

 20 participants randomly allocated to either

CBT + TAU or TAU-alone (control).

 Although history of non compliance with medication

All compliant

No medication changes were made

95% attendance to group

3/10- CBT and 1/10 – control previous psychological input

Participant Demographics

CHARACTERISTIC CBT

GROUP

(N=10)

CONTRO

L GROUP

(N=10)

TOTAL

GROUP

GENDER MALE/FEMALE 4/6 5/5 20

AGE

ETHNICITY

MEAN

SD

[RANGE]

BLACK AFRICAN

46.5

(9.76)

[33-67]

39.9

(9.07)

[27-55]

10% (1) 40% (4)

BLACK BRITISH 20% (2) 10% (1)

43.2

(9.77)

[27-67]

25% (5)

15% (3)

BLACK CARRIBEAN 0% (0) 10% (1) /5% (1)

WHITE BRITISH

SOUTH ASIAN

OTHER

20% (2)

40% (4)

10% (1)

20% (2)

10% (1)

10% (1)

20% (4)

25% (5)

10% (2)

Evaluation

Outcome Measures- Primary

Psychotic Symptom Rating Scale

(PSYRATS) for auditory hallucinations

(Haddock et al., 1999)

11 items assessing severity over past week

 Frequency

Intensity

Distress, disruption control

Total scores- severity of hallucinations

Beliefs About Voices Questionnaire- revised

(BAVQ-R)

(Chadwick et al., 2000)

 35 items beliefs about voices- emotional and behavioural reactions

 Subscales; malevolence, benevolence, resistance, engagement

Evaluation

Outcome Measures-secondary

Beck’s Depression Inventory II (BDI-II)(Beck et al., 1996)

Severity of depression

21 items

Self reported depression

 Beck Cognitive Insight Scale (BCIS) Beck et al., 2004)

2 subscales: self certainty and self reflectiveness

15 items

 Service user evaluation

Service User Evaluation

 Completed short questionnaire post group

 Better understanding of the different areas covered (e.g. role of medication, importance of coping, psychological model of AH)

Most and least useful

Presentation of sessions

Future improvements

Structure

 8-10 participants

 2 facilitators

 Length- 10 weeks

 Weekly

 Practical considerations

Comfortable, safe environment

Tea/coffee and biscuits

Intervention Aims

Triggers, behaviours and consequences

Develop and share cognitive and behavioural coping strategies to help deal with the voices

Share experiences reflect similarities and differences aid restructuring of beliefs

Accept the voices

Self esteem

Increase social support

Reduce Isolation

Share the experience

Learn from one another

Erase the stigma of voice hearing

Intervention

 Group CBT AH (Wykes et al., 1999)- manualised

Engagement and sharing of information- voices

Psychoeducation; Exploring models of psychosis

Content of AH (e.g. malevolent, benevolent)

Behavioural analyses of voices

Exploring beliefs about hallucinations/cognitive restructuring

Developing effective coping strategies

Improving self esteem

Modified Manual

 Increased sessions from 7 to 10 sessions

 Focussed on engagement, coping, role of medication

Process

 Initially

 Some structure – reduce anxiety

Explore voice hearing experiences

Normalise and client led

 Mindful of the nature of this client group

Focus on engagement

Team approach

Attendance to the group- encouraged between sessions

Session content discussed between sessions

Results

Clinical Characteristics

CHARACTERISTIC

DIAGNOSIS

MEDICATION

DURATION OF ILLNESS

Paranoid Schizophrenia

Schizoaffective Disorder

Bipolar Disorder

Atypical Antipsychotics

Typical Antipsychotics

Both Atypical and Typical

Antipsychotics

Anti-manic Medication

Antidepressants

Benzodiazepines

Side Effect Medication

1-10 Years

11-20 Years

21-30 Years

31-40 Years

4

1

6

2

1

3

1

1

CBT Group

8

2

4

0

0

6

N

Control Group

5

4

7

1

1

3

3

4

4

2

0

2

1

0

% OF TOTAL

25%

10%

5%

35%

25%

50%

20%

5%

65%

30%

5%

45%

55%

5%

Analysis

 Mixed model repeated measures design

 Within group:

Measures

Pre and post group

• Between group:

Intervention (CBT +TAU) vs TAU

Significant interactions paired t tests

Outcome measures

Descriptives

MEASURES

CBT Group

PRE

MEAN SD

POST

MEAN SD

BAVQ BEN

BAVQ MAL

BAVQ RES

BAVQ ENG

PSYRATS

BCIS SC

BCIS SR

BCIS composite

BDI

8.1

8.1

11.7

9.8

28.6

22

11.7

10.3

22.5

3.5

3.1

4.6

6.2

5.6

3.7

2.3

4.96

7.5

7.1

6.2

10.6

7.9

23.8

21.3

12.1

9.2

18.8

3.6

3.1

3.3

4.6

3.9

4.1

2.5

5.73

7.1

MEAN

PRE

SD

Treatment as usual

POST

MEAN SD

7.5

7.7

12.3

10.4

26.2

21.7

11.6

10.4

18.8

2.1

2.6

3.1

4.2

6.5

5.8

4

9.1

4.9

7.8

7.6

12.8

10.5

26.5

21.7

11.6

9.7

19

2.3

3.1

3.6

4.3

6.9

5.8

4

9.15

4.5

BCIS Higher scores on self reflectiveness and BCIS composite reflects better insight

Lower scores on self certainty reflects better insight

Results –Primary Outcome

BAVQ

Within the group

 Significant time x measure x group interaction (F (3,16)

=5.34, p <0.01)

PSYRATS

 Significant time x group interaction (F (1,18) =16.29, p

<0.01)

Differences pre and post in CBT+TAU group only

 No between group differences at baseline on these measures (p>0.05)

Results – Secondary

Outcomes

BDI

 Within the group

 Significant time x group interaction (F (1,18) =13.58, p

<0.01)

 Differences pre and post in CBT+TAU group only

BCIS

No significant main effects or interactions (p>0.05)

 No between group differences at baseline on these measures (p>0.05)

Where are the differences?

 Paired t tests

 CBT+TAU group; significant improvement on:

PSYRATS (p<0.01)

BDI (p<0.01)

BAVQ-Malevolent (p<0.01)

 No improvement on the BCIS (p>0.05)

TAU-alone – no significant improvement on any of the primary or secondary outcome measures

(p’s>0.05)

Service user satisfaction

 High levels of satisfaction reported

 Better understanding of psychological model of voices

 Increased repertoire of coping strategies

 Better able to talk about about their experiences

 Requested recovery focussed group -future

Discussion I

Positive effect of CBT for AH

Consistent with previous studies (e.g. Wykes et al., 2005, Penn et al, 2009)

Factors contributing to these significant findings:

Intellectual Ability

Cultural differences

Sharing experiences allows for reflection and can consequently aid in the restructuring of beliefs

Team approach

Discussion II

 CBT as an adjunct to medication

 Possible increase in compliance due to group

Discussions between ‘experts’

– homogeneity – increases credibility

Limitations

 Small sample size

 Longer term follow up

 Other measures: Self esteem, social functioning, coping strategies

Conclusion

 Short course of group CBT effective in improving severity of voices and reducing self-reported depression (scores on the BDI)

 Long term follow up needed - effects maintained?

Acknowledgements

Prof. Veena Kumari Institute of Psychiatry,

Prof. Til Wykes – Institute of Psychiatry,

Kings College London

Guidance, support and collaboration.

• AOT for continual support without whom the group would not have been possible!!

Download