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Detecting postnatal common mental disorders in Addis ababa, ethiopia: Validation of the Edinburgh postnatal depression scale and kessler scales

Published online by Cambridge University Press:  16 April 2020

M. Tesfaye
Affiliation:
Jimma University, Jimma, Ethiopia
C. Hanlon
Affiliation:
Addis Ababa University, Addis Ababa, Ethiopia
D. Wondimagegn
Affiliation:
Addis Ababa University, Addis Ababa, Ethiopia
A. Alem
Affiliation:
Addis Ababa University, Addis Ababa, Ethiopia

Abstract

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Background

The Edinburgh Postnatal Depression Scale (EPDS) has been used successfully across diverse cultural settings. However, a recent study found poor validity in detecting postnatal common mental disorders (CMD) in rural Ethiopia. Using similar methodology, the study was replicated in the capital, Addis Ababa.

Methods

Semantic, content and criterion validity of EPDS, Kessler scale-6 (K6) and Kessler scale-10 (K10) were assessed in postnatal women attending vaccination clinics. Criterion validation was undertaken on 100 postnatal women, with local psychiatrist diagnosis of CMD using the Comprehensive Psychopathological Rating Scale (CPRS) as the criterion measure.

Results

The areas under the Receiver Operating Characteristic (AUROC) curve for the EPDS, K6 and K10 were 0.85 (95%CI 0.77–0.92), 0.86 (95%CI 0.76–0.97) and 0.87 (95%CI 0.78–0.97), respectively. The EPDS generated sensitivity, specificity and misclassification rates of 78.9%, 75.3% and 24.0%, respectively at an optimal cut-off point of 6/7. The corresponding values for the K6 were 84.2%, 82.7% and 17.0% at a cut-off point of 4/5, and for K10 were 84.2%, 77.8% and 21.0% at a cut-off point of 6/7, respectively. The internal reliability Cronbach's alpha for the EPDS, K6 and K10 were 0.71, 0.86 and 0.90, respectively.

Limitations

Not all postnatal women bring their infants to vaccination clinics which may limit generalisability.

Conclusion

The EPDS, K6 and K10 all demonstrated acceptable clinical utility as screening scales for postnatal CMD in an urban setting in Ethiopia. The marked urban-rural difference in EPDS performance within Ethiopia highlights the difficulty of applying urban-validated instruments to rural settings in LAMIC.

Type
P03-519
Copyright
Copyright © European Psychiatric Association 2011
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