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Table 3.5.14 Sensitivity and specificity for SCID-I with LEAD<br />

as reference standard.<br />

Author<br />

Year<br />

Reference<br />

Country<br />

Study design<br />

Setting<br />

Population<br />

Inclusion & exclusion criteria<br />

Prevalence<br />

Index test<br />

Reference test<br />

Number of patients<br />

Drop-out rate<br />

Rater<br />

Rater training<br />

Interobserver reliability<br />

Outcome measure<br />

Sensitivity<br />

Specificity<br />

Study quality<br />

Comments<br />

Miller et al<br />

2001<br />

[6]<br />

USA<br />

Design<br />

Cross sectional<br />

and longitudinal<br />

Setting<br />

University-affiliated public<br />

psychiatric hospital in<br />

Los Angeles, USA<br />

Population<br />

n=75 inpatients eligible,<br />

75% (n=56) participated,<br />

mostly chronically ill with<br />

multiple diagnoses, one<br />

patient declined to participate,<br />

other 18 excluded according<br />

to criteria below<br />

Inclusion criteria<br />

>18 years, sufficient English<br />

fluency and cognitive function<br />

to participate in interviews.<br />

First patient each week<br />

was screened<br />

SCID-I-CV<br />

Reference test<br />

LEAD<br />

Consensus by raters<br />

using discharge clinical<br />

diagnoses, SCID-I, structured<br />

interview, all data<br />

Number of patients<br />

n=56 (45% female)<br />

Mean age: 36.9 years<br />

(SD 12.4; range 19–59)<br />

Drop-out rate<br />

None<br />

Rater of index test<br />

Two psychiatrists<br />

Rater training<br />

Extensive training<br />

Rater of reference test<br />

Three to four psychiatrists<br />

or PhD psychologist<br />

Training of reference test<br />

NA<br />

Interobserver reliability<br />

Not reported<br />

Outcome measure<br />

Sensitivity and specificity<br />

values are constructed<br />

from data in the article<br />

Bipolar disorder (n=6)<br />

Sensitivity: 100%<br />

Specificity: 96%<br />

Depression (n=12)<br />

Sensitivity: 92%<br />

Specificity: 98%<br />

Schizoaffective<br />

disorder (n=21)<br />

Sensitivity: 76%<br />

Specificity: 97%<br />

Moderate<br />

Comments<br />

Sampling method<br />

Adequate, among severely<br />

ill patients but small sample<br />

Blinding<br />

Yes, NA for LEAD<br />

Handling of missing data<br />

NA<br />

Other comments<br />

Withdrawals explained,<br />

SCID-I interobserver<br />

reliability not reported,<br />

SCID-I was performed<br />

close to intake<br />

Exclusion criteria<br />

Too acutely disordered<br />

Prevalence<br />

BP: 10.7% (6/56)<br />

MDD: 21.4% (12/56)<br />

Schizoaffective: 37.5% (21/56)<br />

The table continues on the next page<br />

294 diagnostik och uppföljning av förstämningssyndrom<br />

KAPITEL 3 • Systematisk litteraturgenomgång<br />

295

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