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RCPsych AGM10 - Diagnosing depression in primary care and hospital settings new evidence (v3)
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Transcript of RCPsych AGM10 - Diagnosing depression in primary care and hospital settings new evidence (v3)
Alex Mitchell [email protected]
Consultant in Liaison Psychiatry & Psycho-oncology
Diagnosing Depression in Primary Care and Hospital
Settings - Towards a change in clinical practice
RCPsych Workshop 2010 – 9.45 – 11am
Loss of confidenceLow motivation / driveWithdrawalAvoidanceSocial isolationWorryFeelings of dreadHelplessnessHopelessnessPsychic anxietySomatic anxietyAngerLack of reactive moodCognitive Change (=> memory complaints)Perceptual distortion
Which Are Recognized Symptoms of MDD?
=> plan
ALL
SOME
NONE
UNSURE
DSMVICD11
Symptoms
Under-served
Distress
Monitoring
Scales
Screening
Qualityof care
Older people
PhysicalIllness
DepressionDetection
Prescribing
Follow-up
Culturaleffects
Se Change
PhysiciansSpecialSymptoms
PrimaryCare
Impairment
Help Seeking
Introduction – What’s Going Wrong?
BackgroundContents
% Receiving Any treatment for Depression (CIDI)
10.911.3
8.18.8
4.3
5.6
10.9
13.8
6.8
17.9
3.4
5.5
15.4
7.2
0
2
4
6
8
10
12
14
16
18
20
High Inc
omeBelg
ium
France
German
y
Israe
l
Italy
Japa
nNeth
erlan
dsNew
Zeala
nd
Spain USALow
Inco
me
ChinaColom
biaSouth
Afri
caUkra
ine
Wang P et al (2007) Lancet 2007; 370: 841–50
n=84,850 face-to-face interviews
=> USA
77.7
17.7 20.515.6
29.9
14.8
25.3
84.3
12.8
21.717.5 20.3
10.8
23.2
84.5
28.3
40.9
30.3
43
28.9
46
0
10
20
30
40
50
60
70
80
90
Any
prim
ary
care
pra
ctiti
oner
vis
it (1
-yr)
Any
men
tal h
ealth
spe
cial
ist v
isit
(1-y
r)
Any
antid
epre
ssan
t or a
ntia
nxie
ty m
edic
a...
Appr
opria
te m
edic
atio
n us
e*
Any
coun
selin
g us
e
Appr
opria
te c
ouns
elin
g us
e*
App
ropr
iate
trea
tmen
t use
*
Depression Alone (=883)
Anixety Alone (n=314)
Depression and Anxiety (n = 439)
Young et al (2001) The Quality of Care for Depressive and Anxiety Disorders in the United States. Arch Gen Psychiatry. 2001;58:55-61
462 (42%)Meetable Needs
1093 (100%)Population
388 (84%)Aware of Need
172 (44%)Requested Help
80 (47%)Needs Met
462 needs
17.3%
322 DSMIV
25%
Patient & provider factors=> DUD
94.2%
37.4%
8 yrs N= 9282 NCS‐R
N=23 studies; 50% some treatment 33% minimal treatment N=19 studies; 30% 1 in 1/12; 10% 3 in 3 months
5 Steps to Improve QoC….and change clinical practice
1. Re-look at concept / criteria /symptoms
2. Understand Detection Problems
3. Understand special populations
4. Consider Enhanced Detection
5. Tie Detection to Clear Action
Depression Care: Who Provides it?
2/3rds 1/3rd
25%Psychiatry
10%Medical
Primary Care
cg90cg42
Percentage of U.S. retail psychotropic prescriptions written from August 2006 to jul07
Mark et al. PSYCHIATRIC SERVICES September 2009 Vol. 60 No. 9
1.00
0.64
0.26
0.10
0.00
0.20
0.40
0.60
0.80
1.00
1.20
All visits (N =14,372) Primary care (N =3,605) Psychiatrists (N =293) Medical specialists (N=10,474)
Comment: Slide illustrates added proportion of all depression treated in each setting. Most depression is treated in primary care
J Gen Intern Med. 2006 September; 21(9): 926–930.
1a. Re-examination of Depression
Is depression a disease; disorder (syndrome) or normally distributed
Graphical – two diseases
Healthy
Stroke# ofIndividualsWith symptom
Severity of Infarct
Point of Rarity
Comment: Slide illustrates the concept of discrimination using one symptom severity of “low mood”
Graphical – two disorders
Healthy
Diabetes
# ofIndividualsWith symptom
HBA1c
?Point of Rarity
Optimal cut
Graphical - Dimension
Non-Depressed
Depressed# ofIndividualsWith symptom
Severity of Low Mood
Comment: Slide illustrates added hypothetical distribution of mood scores in a population with hidden depression
Do We Have Good Data in Psychiatry?
0
500
1000
1500
2000
2500
3000
Zero One
TwoThree Fo
urFiv
e
SixSeve
neig
htNine Ten
Eleven
Twelv
eTh
irtee
nFour
teen
Fiftee
nSixt
eenSeve
nteen
Eighteen
HADS-D N=18,414
Comment: Slide illustrates added actual distribution of mood scores on the HADS in a cancer population with hidden depression from the Edinburgh cancer centre
Distress Ratings (n=2,200) clinical significance criterion
Proportion
18 .4 %
12 .9 %
11.2 %12 .3 %
8 .1%
11.9 %
5.0 %
2 .8 % 2 .6 %
7.7% 7.2 %
0.0%
2.0%
4.0%
6.0%
8.0%
10.0%
12.0%
14.0%
16.0%
18.0%
20.0%
Zero One Two Three Four Five Six Seven Eight Nine Ten
Insignificant SevereModerateMildMinimal
p124
50%
Depression is on a continuum using current scales……..There will always be a trade-off of sensitivity vs specificty
Back to Basics Lessons
=> Categorial
1b. Re-examination of Criteria of Depression
=> ICD10
YesYesGuilt or self-blame
DSMIVICD10Core Symptoms
YesNoSignificant change in weight
YesYesAgitation or slowing of movements
YesYesSuicidal thoughts or acts
NoYesPoor or increased appetite
NoYesLow self-confidence
YesYesPoor concentration or indecisiveness
YesYesDisturbed sleep
YesYes (core)Fatigue or low energy
Yes (core)Yes (core)Loss of interests or pleasure
Yes (core)Yes (core)Persistent sadness or low mood
Symptom Significance in Depression
(7 or) 8 symptoms (3+4)
(5 or )6 symptoms
4 symptoms (2+2)
2 or 3 symptoms
0 or 1 symptom
ICD10
16 - 21UnspecifiedSevere
12 - 155 symptoms (Mj)
Moderate
8 -112-4 symptoms (minor)
Mild
4 - 71 or No core symptoms
Sub-syndromal
0 - 30 symptomHealthy
HADs D ScoreDSMIVDepression Severity
Change in practice – ICD10 2/4/6/8 + CS
“Common” Symptoms of Depression
0.120.56Thoughts of death
0.330.59Psychic anxiety
0.120.61Worthlessness
0.420.69Anxiety
0.270.70Insomnia
0.120.81Diminished interest/pleasure
0.240.82Diminished concentration
0.320.83Sleep disturbance
0.270.87Concentration/indecision
0.320.87Loss of energy
0.300.88Diminished drive
0.180.93Depressed mood
Non-Depressed FrqDepressed FrqItem
Mitchell, Zimmerman et al n=2300
“Uncommon” Symptoms
0.060.16Increased weight
0.060.19Hypersomnia
0.070.19Increased appetite
0.060.22Lack of reactive mood
0.060.23Decreased weight
0.040.28Psychomotor retardation
0.090.34Psychomotor agitation
0.260.44Anger
0.110.45Decreased appetite
0.250.46Somatic anxiety
Non-Depressed ProportionDepressed ProportionItem
Mitchell, Zimmerman et al MIDAS Database. Psychol Med 2009
-0.10
0.00
0.10
0.20
0.30
0.40
0.50A
nger
Anx
iety
Dec
reas
ed a
ppet
ite
Dec
reas
ed w
eigh
t
Dep
ress
ed m
ood
Dim
inis
hed
conc
entr
atio
n
Dim
inis
hed
driv
eD
imin
ishe
d in
tere
st/p
leas
ure
Exce
ssiv
e gu
ilt
Hel
ple
ssne
ss
Hop
eles
snes
s
Hyp
erso
mni
a
Incr
ease
d ap
peti
te
Incr
ease
d w
eigh
t
Inde
cisi
vene
ss
Inso
mni
aLa
ck o
f re
acti
ve m
ood
Loss
of
ener
gy
Psyc
hic
anxi
ety
Psyc
hom
otor
agi
tati
on
Psyc
hom
otor
cha
nge
Psyc
hom
otor
ret
arda
tion
Slee
p di
stur
banc
e
Som
atic
anx
iety
Thou
ghts
of
deat
h
Wor
thle
ssne
ss
Rule-In Added Value (PPV-Prev)Rule-Out Added Value (NPV-Prev)
Comment: Slide illustrates added value of each symptom when diagnosing depression and when identifying non-depressed
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Depressed Mood
Diminished drive
Diminished interest/pleasure
Loss of energy
Sleep disturbanceDiminished concentration
Sensitivity
1 - Specificity
n=1523
Comment: Slide illustrates summary ROC curve sensitivity/1-specficity plot for each mood symptom
Symptoms of depression are not necessarily optimalFurther research is required against course and burden
Back to Basics Lessons
2. Recognition in Routine Care
Is “diagnosis as usual” sufficient?
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
=> Psychiatrists
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 Staff Psychiatrists
Current MethodComment: Slide illustrates preferences of cancer clinicians vs psychiatrists for detecting depression
86.8
55.6 54.4
43.3
36
29.826.2 25.6 25.2 23.8 24
21.4 21.2
13.9 12.89.5
7.2 7 7 5.9 4.8 4.1 2.6 1.8 1.8 1.3 0.9 0.4 0.40
10
20
30
40
50
60
70
80
90
100
Slee
p di
stur
banc
es; i
nsom
nia;
ear
ly w
aken
ing
Loss
of a
ppet
ite; o
vere
atin
g; w
eigh
t cha
nges
Dep
ress
ed m
ood;
hop
eles
snes
s; s
ad; g
loom
y
Apat
hy; l
etha
rgy;
tire
dnes
s; la
ssitu
de
Loss
of i
nter
est;
with
draw
al; i
ndiff
eren
ce; l
onel
ines
s
Loss
of e
nerg
y; lo
ss o
f driv
e; b
urnt
out
Loss
of l
ibido
; los
s of
sex
driv
e; im
pote
nce
Tear
s; w
eepi
ng; c
ryin
g
Anxi
ous;
agi
tate
d; ir
ritab
le; r
estle
ss, t
ense
; stre
ssed
Feeli
ng w
orth
less
; gui
lty; l
ack
of s
elf e
stee
m
Som
atic
; veg
etat
ive
sym
ptom
s; m
alai
se; m
ultip
le c
onsu
ltatio
ns
Suici
de th
ough
ts; t
houg
ht o
f sel
f inj
ury
Loss
of c
once
ntra
tion;
poo
r mem
ory,
poo
r thi
nkin
g
Dim
inis
hed
perfo
rman
ce; i
nabi
lity to
cop
e
Emot
iona
l labi
lity;
moo
d sw
ings
Loss
of a
ffect
; fla
t affe
ct; l
oss o
f em
otio
n
Loss
of e
njoy
men
t or p
leas
ure;
lack
of h
umor
Beha
viou
ral p
robl
ems;
agg
ress
iven
ess;
beh
avio
ural
cha
nges
Pess
imis
m; n
egat
ive
attit
udes
, wor
ryin
g
Psyc
hom
otor
reta
rdat
ion;
slow
ness
Hea
dach
es; d
izzi
ness
Appe
aran
ce; s
peec
h; e
xces
sive
sm
iling
; vag
uene
ss, e
tc.
Hea
vy u
se o
f alc
ohol
, tob
acco
or d
rugs
Del
usio
ns; h
alluc
inat
ions
; con
fusi
on
Reac
tion
to p
roba
ble
caus
es o
r life
eve
nts
Fam
ily o
r pas
t his
tory
of d
epre
ssio
n
Obs
essi
ve id
eatio
n; p
hobi
asLa
ck o
f ins
ight
Perio
d of
life
(men
opau
se)
Comment: Slide illustrates which symptoms are asked about by GPS looking for depression
What do GPs Ask about:Sleep
AppetiteLow
Energy
GP Recognizes:Proportion of Individual Symptoms Recognised by GPs
76.1
36.4 34.631.6
21.616.7
13.39.1 8.3 8.3
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
Low m
ood
Insomnia
Hypoc
hondri
asis
Loss
of in
terest
Tearfu
lness
Anxiety
Loss
of en
ergy
Pessim
ism
Anorex
ia
Not Copin
g
O’Conner et al (2001) Depression in primary care.Int Psychogeriatr 13(3) 367-374.
GP Detection of Depression – Meta-analysis
Methods– 140 studies of GP recognition
rate =>
– 90 depression– 40 interview– 19 se sp (+2)– 10 countries
Accuracy 2x2 Table
PrevalenceSpecificitySensitivity
NPVTrue -VeFalse -VeTest -ve
PPVFalse +veTrue +veTest +ve
DepressionABSENT
DepressionPRESENT
Accuracy of GP’s Diagnoses
955927,6406553
667825,1254050GP -ve
501825152503GP +ve
DepressionABSENT
DepressionPRESENT
Sensitivity48%
PPV 42.8%
Specificity80.1%
NPV 85.1%
Prevalence 19%
N=35 studies
100 weekly referrals
GP Assessment
10TP 10FN
20 D
Screen #1+ve
n = 20 80 ND
Sp 80%
Se 50%
n = 80
N = 100
TP = 10
FP = 1664TN 16FP TN =64
FN = 10
PPV 28% NPV 88%
Screen #1-ve
GP Opinion
50% TP and 25% FP Offered Treatment
50‐80% accept initial treatment
100 weekly referrals
GP Assessment
7TP 13FN
20 D
Screen #1+ve
n = 20 80 ND
Sp 90%
Se 30%
n = 80
N = 100
TP = 10
FP = 1672TN 8FP TN =64
FN = 10
PPV 50% NPV 80%
Screen #1-ve
50% TP and 25% FP Offered Treatment
50‐80% accept initial treatment
1/3 of screen positive patients with no treatment well at follow‐up
GP Notation
3/20TP Offered Rx => appropriate treatment rate of 5-20%
2/80FP Offered Rx => inappropriate treatment rate of 1-2%
Weekly Population
GP Assessment
Possible case
Depression
Screen #1+ve
n = 20 No Depression
Sp 80%
Se 50%
n = 80
N = 100
TP = 10
FP = 16Probable Non-Case TN =64
FN = 10
PPV 28%
2nd Assessment Sp 80%
Se 50%
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%
77%
89%
Single assessment inadequateFalse +ve’s are more of a problem than expected
Back to Basics Lessons
3. Predictors of Recognition
0.03
0.19
0.210.22
0.20
0.05
0.02 0.020.01 0.01
0.010.01 0.01 0.01
0.00
0.05
0.10
0.15
0.20
0.25
5mins
10mins
15mins
20mins
25mins
30mins
35mins
40mins
45mins
50mins
55mins
60mins
65mins
70mins
65%
Geraghty JGIM 2007
Is 10‐15 minutes enough?
Severity
0
500
1000
1500
2000
2500
3000
Zero One
TwoThree Fo
urFiv
e
SixSeve
neig
htNine Ten
Eleven
Twelv
eTh
irtee
nFour
teen
Fiftee
nSixt
eenSeve
nteen
Eighteen
HADS-D
0
0.05
0.1
0.15
0.2
0.25
0.3
Eight
Nine Ten
Eleven
Twelv
eTh
irtee
nFo
urtee
n
Fiftee
nSixt
een
Seven
teen
Eighteen
Ninetee
n
Twen
tyTw
enty-
one
Proportion MissedProportion Recognized
HADS-D
Comment: Slide illustrates diagnostic accuracy according to score on DT
11.815.4
30.4 28.9
41.9 42.9 40.7
57.1
82.4
66.771.4
15.8
25.0
26.124.4
19.4 19.0
33.3
21.4
11.8
22.2 14.3
72.4
59.6
43.546.7
38.7 38.1
25.921.4
5.911.1
14.3
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
Zero One Two Three Four Five Six Seven Eight Nine Ten
Judgement = Non-distressedJudgement = UnclearJudgement = Distressed
CNS in Oncology N=401
Recognition from WHO PPGHC Study (Ustun, Goldberg et al)
7470 69.6
61.5 59.656.7 56.7 55.6 54.2
45.7 43.939.7
28.4
22.2 21 19.3
0
10
20
30
40
50
60
70
80
Santia
go
Verona
Manch
ester
Paris
Groningen
Berlin
Seattle
Mainz
TOTALBangalo
reRio de J
aneir
o
Ibadan
Ankara
Athen
sShan
ghaiNagas
aki
Clinician traits eg confidence
0.00
0.10
0.20
0.30
0.40
0.50
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
Ave Confidence+
Ave Confidence-
Baseline Probability
Above Ave Confidence+
Above Ave Confidence-
High Confidence+
High Confidence-
Low confidence = more cautious, fewer false positives, more false negatives
High confidence = less cautious, more false positives, low false negatives
p180
Predictors of Recognition
Prevalence10% rural 15% mean 20% urban 20% (oncology 25%)
Severity70% mild 20% moderate 10% severe
InternationalLow in developing but in Western:Italy > Netherlands >Australia > UK > US
ContactCummulative: 77% single 89% 3-6 monthsAppointment Duration
Confidence &trust
4. Comorbid Depression
Back to Basics
Approaches to Somatic Symptoms of DepressionInclusiveUses all of the symptoms of depression, regardless of whether they may or may not be secondary to a physical illness. This approach is used in the Schedule for Affective Disorders and Schizophrenia (SADS) and the Research Diagnostic Criteria.
ExclusiveEliminates somatic symptoms but without substitution. There is concern that this might lower sensitivity. with an increased likelihood of missed cases (false negatives)
EtiologicAssesses the origin of each symptom and only counts a symptom ofdepression if it is clearly not the result of the physical illness. This is proposed by the Structured Clinical Interview for DSM and Diagnostic Interview Schedule (DIS), as well as the DSM-III-R/IV).
SubstitutiveAssumes somatic symptoms are a contaminant and replaces these additional cognitive symptoms. However it is not clear what specific symptoms should be substituted
Who Uses Specific Non-Somatic scales?
Medically Unwell Alone
Primary Depression Alone
Secondary Depression
Comment: Slide illustrates concept of phenomenology of depressions in medical disease
FatigueAnorexiaInsomnia
Concentration
Study: Coyne Thombs Mitchell
N= 4500; Pooled database study; All comparative studies
Physical illness+comorbid depressionVsPhysical illness aloneVs
Primary depression alone
Co-morbid Depression vs Primary Depression
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Agitatio
n (Com
orbid)
Agitatio
n (Prim
ary)
Anxiety
(Com
orbid)
Anxiety
(Prim
ary)
Appetite
(Comorb
id)
Appetite
(Prim
ary)
Concen
tratio
n (Comorb
id)
Concen
tratio
n (Prim
ary)
Fatigu
e (Comorb
id)
Fatigu
e (Prim
ary)
Guilt (
Comorbid)
Guilt (
Primar
y)
Hopeles
snes
s (Comorb
id)
Hopeles
snes
s (Prim
ary)
Insomnia
(Comor
bid)
Insomnia
(Prim
ary)
Loss In
teres
t (Comorb
id)
Loss In
teres
t (Prim
ary)
Low Mood (C
omorbid)
Low Mood (P
rimary
)
Retard
ation (
Comorbid)
Retard
ation (
Primary)
Suicide (
Comorbid)
Suicide (
Primar
y)
Weight L
oss (C
omorbid)
Weight L
oss (P
rimary
)
*
*
*
*
*
**
*
*
Comorbid Depression
Primary Depression
n=4069 vs 4982Comment: Slide illustrates similar symptoms profile in comorbid vsprimary depression
Medically Unwell Alone
Primary Depression Alone
Secondary Depression
Comment: Slide illustrates concept of phenomenology of depressions in medical disease
FatigueAnorexiaInsomnia
Concentration
BEFORE
Primary Depression Alone
Secondary Depression
Comment: Slide illustrates concept of phenomenology of depressions in medical disease
AgitationRetardation
Co-morbid Depression vs Medical Illness Alone
n= 4069 vs 1217
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Anxiety
(Com
orbid)
Anxiety
(Med
ical)
Concen
tratio
n (Comorb
id)
Concen
tratio
n (Med
ical)
Fatigu
e (Comorb
id)Fati
gue (
Medica
l)
Hopeles
snes
s (Comorb
id)
Hopeles
snes
s (Med
ical)
Insomnia
(any t
ype)
(Comorb
id)
Insomnia
(any t
ype)
(Med
ical)
Loss In
teres
t (Comorb
id)
Loss In
teres
t (Med
ical)
Low Mood (C
omorbid)
Low Mood (M
edical)
Retard
ation (
Comorbid)
Retard
ation (
Medica
l)
Suicide (
Comorbid)
Suicide (
Medica
l)
Weight L
oss (C
omorbid)
Weight L
oss (M
edical)
Worthles
snes
s (Comor
bid)
Worthles
snes
s (Med
ical)
Medical Illness Alone
Comorbid Depression
**
*
*
*
*
*
*
*
Comment: Slide illustrates distinct symptoms profile in comorbid depression vs medical illness alone
Medically Unwell Alone
Primary Depression Alone
Secondary Depression
Comment: Slide illustrates concept of phenomenology of depressions in medical disease
FatigueAnorexiaInsomnia
Concentration
Medically Unwell
Primary Depression
Secondary Depression
Comment: Slide illustrates actual phenomenology of depressions in medical disease
Weight loss
AgitationRetardation
Comorbid depression scales need to be reexaminedAgainst alternatives
Back to Basics Lessons
5. Enhanced Detection Strategies
Does Screening Work?
1,2 or 3 Simple QQ15%
Clinical Skills Alone73%
ICD10/DSMIV0%
Short QQ3%
Other/Uncertain9%
Methods to Evaluate Depression
Unassisted Clinician Conventional Scales
Verbal Questions Visual-Analogue Test
PHQ2
WHO-5
Whooley/NICE
Distress Thermometer
Depression Thermometer
Ultra-Short (<5)Short (5-10) Long (10+)Untrained Trained
1,2 or 3 Simple QQ15%
Clinical Skills Alone73%
ICD10/DSMIV0%
Short QQ3%
Other/Uncertain9%
1,2 or 3 Simple QQ15%
Clinical Skills Alone73%
ICD10/DSMIV0%
Short QQ3%
Other/Uncertain9%
0.00
0.10
0.20
0.30
0.40
0.50
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
Clinician Positive (Fallowfield et al, 2001)
Clinician Negative (Fallowfield et al, 2001)
Baseline Probability
HADS-D Positive (Mata-analysis)
HADS-D Negative (Meta-analysis)
Comment: Slide illustrates Bayesian curve comparison from indirect studies of clinician and HADS
This illustrates POTENTIAL gain from screening
Gain?
Benefit
All scales side-by-side
Meader et alNational Collaborative Centre for Mental Health
0.00
0.10
0.20
0.30
0.40
0.50
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 HADS+
HADS-
Baseline Probability
GDS30+
GDS30-
GDS15+
GHQ28+
HDRS+
ZUNG+
GDS15-
GHQ28-
HDRS-
ZUNG-
PHQ9+
PHQ9-
WHOOLEY2Q+
WHOOLEY2Q-
BDI+
BDI-
BDI-SF+
BDI-SF-
CESD+
CESD-
1Q+
1Q-
GHQ12+
GHQ12-
PHQ2 = HIGH NPV
What is the actual added value?
Is there a circularity?
8 RCTs of screening vs no-screening in PC
Comment: Slide illustrates actual gain in meta-analysis of screening implementation in primary care
0.00
0.10
0.20
0.30
0.40
0.50
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
Pos
t-tes
t Pro
babi
lity
Clinical+Clinical-Baseline ProbabilityScreen+Screen-
Comment: Slide illustrates Bayesian curve comparison from RCT studies of clinician with and without screening
This illustrates ACTUAL gain from screening in Study from Christensen
Depression screening can work……..Under favourable conditions
Back to Basics Lessons
5. Depression in Older People
Does it go unrecognized?
Are Somatic Symptoms Common in Older People?
QuestionsMore or less difficult to detect late-life depression?
More or less
Low moodAgitation InsomniaPoor concentration
0.00
0.10
0.20
0.30
0.40
0.50
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
Pos
t-tes
t Pro
babi
lity
Routine Case-Finding Late-LifeRoutine Exclusion Late-lifeBaseline ProbabilityRoutine Case-Finding MixedRoutine Exclusion MixedRoutine Case-Finding YoungerRoutine Exclusion Younger
Comment: Slide illustrates detection of late life vs mid-life depression in primary care – GPs are least successful with late-life depression
-0.25
-0.2
-0.15
-0.1
-0.05
0
0.05
0.1
Hel
ples
snes
s
Hop
eles
snes
s
Wor
thle
ssne
ss
Anx
iety
(Som
atic
anx
iety
)
Ang
er
Inde
cisi
vene
ss
Thou
ghts
of D
eath
Dim
inis
hed
Con
cent
ratio
n
Anx
iety
(Com
bine
d)
Incr
ease
d A
ppet
ite
Slee
p D
istu
rban
ce (H
yper
som
nia)
Slee
p D
istu
rban
ce (C
ombi
ned)
Incr
ease
d W
eigh
t
Loss
of E
nerg
y
Psyc
hom
otor
Agi
tatio
n
Anx
iety
(Psy
chic
anx
iety
)
Exce
ssiv
e G
uilt
Dim
inis
hed
Inte
rest
Slee
p D
istu
rban
ce (I
nsom
nia)
Dec
reas
ed A
ppet
ite
Dep
ress
ed M
ood
Psyc
hom
otor
Ret
arda
tion
Dec
reas
ed W
eigh
t
More common in late-life depression
More common in early-life depression
Comment: Slide illustrates simple frequency of symptoms in late life vsmid-life depression
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
Anger
Anxiety
(Com
bined)
Anxiety
(Psy
chic
anxie
ty)
Anxiety
(Somatic
anxiet
y)
Decre
ased
App
etite
Decre
ased
Weig
ht
Depres
sed M
ood
Diminish
ed C
oncentra
tion
Diminish
ed In
teres
tExc
essiv
e Guilt
Helples
snes
sHope
lessn
ess
Increas
ed A
ppetite
Increas
ed W
eight
Indecisi
venes
sLoss
of Ene
rgy
Psych
omotor Agita
tion
Psych
omotor Retar
datio
n
Sleep D
isturban
ce (C
ombined)
Sleep D
isturban
ce (H
ypers
omnia)
Sleep D
isturban
ce (In
somnia)
Thoughts
of Dea
thWorth
lessn
ess
<55>54>59>64
*
*
*
*
*
**
*
Comment: Slide illustrates diagnostic value of symptoms in late life vs mid-life depression – few have special significance
Mid-life Depression
Late-life Depression
Comment: Slide illustrates actual phenomenology of late life depression
Poor concworthlessness
Tools and criteria for late-life dep……..May need to be re-examined
Back to Basics Lessons
=> Future?
=86.4% =82.2%
=57.6%Beals AGP 2004
0.00
0.10
0.20
0.30
0.40
0.50
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
Pos
t-tes
t Pro
babi
lity
Help-Seeking Any+
Help-Seeking Any-
Baseline Probability
Help-Seeking Medical+
Help-Seeking Medical-
Impairment+
Impairment-
Distress+
Distress-
Beals - Challenges in Operationalizing the DSM-IV - Clinical Significance Criterion Arch Gen Psychiatry. 2004;61:1197-1207
SummaryQuestions
Quick Summary
Depression is modestly common & easily missed5% have depression as their main reason for presentation
Most depression is comorbid50% adults 80% elderly have physical illness
All health professionals struggle with diagnosisSymptom approach
Routine screening modestly effectiveHigh risk, targeted and algorithm approaches
Dimensional approach developingTrials in cardiac care and oncology and neurology of ET