ipos10 t641 - a definitive meta-analysis to ascertain the optimal screening method for depression in...
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A Definitive Meta-analysis to Ascertain the Optimal Screening Method for Depression in Cancer and Palliative Care. Part I - Single Test ApplicationTRANSCRIPT
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Alex Mitchell www.psycho-oncology.info
Department of Cancer & Molecular Medicine, Leicester Royal Infirmary
Department of Liaison Psychiatry, Leicester General Hospital
IPOS2010IPOS2010
T126 - Screening and Case Identification for Depression inCancer and Palliative Settings:
A Meta-Analysis of Diagnostic Validity Studies
T126 - Screening and Case Identification for Depression in Cancer and Palliative Settings:
A Meta-Analysis of Diagnostic Validity Studies
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1. Background1. Background
What methods are used to detect mood disorders?
How often do clinicians look for mood complications?
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Methods to Evaluate Depression
Conventional Scales
Short (5-10) Long (10+)
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Comment: This is a reminder of the structure of the HADS scale, this version adapter for cancer.
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Methods to Evaluate Depression
Conventional Scales
Ultra-Short (<5)Short (5-10) Long (10+)
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Methods to Evaluate Depression
Unassisted Clinician Conventional Scales
Ultra-Short (<5) Short (5-10) Long (10+)Untrained Trained
Routine Implementation
Acceptability ?
Accuracy? Accuracy?
vsComment: schematic overview of methods to evaluate depression
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n=226Comment: Frequency of cancer specialists enquiry about depression/distress from Mitchell et al (2008)
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1,2 or 3 Simple QQ15%
Clinical Skills Alone73%
ICD10/DSMIV0%
Short QQ3%
Other/Uncertain9% Other/Uncertain
2%
Use a QQ15%
ICD10/DSMIV13%
Clinical Skills Alone55%
1,2 or 3 Simple QQ15%
Cancer StaffCurrent Method (n=226)
Psychiatrists
Comment: Current preferred method of eliciting symptoms of distress/depression
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Validity of Methods to Evaluate Depression
Unassisted Clinician Conventional Scales
Ultra-Short (<5) Short (5-10) Long (10+)Untrained Trained
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5. Meta-Analysis5. Meta-Analysis
What can enhance detection?
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MethodsMethodsThere were 41 valid analyses; prevalence of depression
was 24.3% (95% CI = 17.3% to 32.0%).
29 in oncology settings… 3x studies on the BDI-II, From 4 studies using the DT and remainder of studies involved the HADS.
Only 12 in palliative settings (most HADS; non with DT)Inc 3x studies involving Two Questions and 3 studies of
the EPDS
Unfortunately most had not received independent validation.
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Common MethodsCommon MethodsDTBDIBDI fast screenPHQ-9PHQ-2 / two stem questionsGHQ-12 and GHQ-28CES-DGDS-30GDS-15Zung SDSHADS-DHDRS.
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0
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Pre-test Probability
Pos
t-tes
t Pro
babi
lity
Baseline Probability
Depression+
Depression-
PPV
NPV
Comment: At a prevalence of 20% GPs PPV is 40% and NPV 86%
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Pre-test Probability
Post
-test
Pro
babi
lity
HADS-D+
HADS-D-
Baseline Probability
2Q+
2Q-
EPDS+
EPDS-
1Q+
1Q-
Palliative
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1.00
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Pre-test Probability
Post
-test
Pro
babi
lity
1Q+1Q-Baseline ProbabilityHADS-D+HADS-D-HADS-T+HADS-T-BDI+BDI-HADS-A+HASD-A-DT+DT-
Non-Palliative
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0.00
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0.60
0.70
0.80
0.90
1.00
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Pre-test Probability
Post
-test
Pro
babi
lity
1Q+1Q-Baseline ProbabilityDT+DT-2Q+2Q-HADSd+HADSd-HADS-T+HADS-T-BDI+BDI-EPDS+EPDS-HADS-A+HASD-A-
MDD - Palliative and Non-Palliative
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SummarySummaryFrom 29 non-palliative-
The optimal method was the BDI-II although the DT was good in a screening capacity.
Across 12 palliative analyses (n=1760) –
The optimal initial method was the two question approach.
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5. Cancer Care – Cumulative Testing5. Cancer Care – Cumulative Testing
What repeat testing enhance detection?
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Cancer Population
CNS Assessment
Possible case
Depression
Screen #1+ve
n = 200 No Depression
Sp 55%
Se 70%
n = 800
N = 1000
TP = 140
FP = 360Probable Non-Case TN =440
FN = 60
PPV 28% NPV 88%
Screen #1-ve
YieldTP = 140
TN = 440
FN = 60
FP = 360
NPV 88%
PPV 28%
Sp 55%
Se 70%
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Cancer Population
CNS Assessment
Possible case
Depression
Screen #1+ve
n = 200 No Depression
Sp 55%
Se 70%
n = 800
N = 1000
TP = 140
FP = 360Probable Non-Case TN =440
FN = 60
PPV 28%
Oncologist Assessment Sp 80%
Sp 40%
NPV 88%
Probable Depression TP = 56
FP = 72Probable Non-Case TN =288
FN = 84
PPV 44% NPV 77%
Screen #1-ve
Screen #2+ve
Screen #2+ve
Cumulative YieldTP = 56
TN = 728
FN = 144
FP = 72
NPV 83%
PPV 44%
Sp 91%
Se 28%
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Credits & Acknowledgments
Elena Baker-Glenn University of NottinghamPaul Symonds Leicester Royal InfirmaryChris Coggan Leicester General HospitalBurt Park University of NottinghamLorraine Granger Leicester Royal InfirmaryMark Zimmerman Brown University, Rhode Island
James Coyne University of PennsylvaniaNadia Husain University of Leicester
For more information www.psycho-oncology.info
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FURTHER READING:
Screening for Depression in Clinical Practice An Evidence-Based guide
ISBN 0195380193 Paperback, 416 pagesNov 2009Price: £39.99