Shortening the Edinburgh Postnatal Depression Scale using Optimal Test Assembly Methods: Development of the EPDS-Dep-5
Standard
Shortening the Edinburgh Postnatal Depression Scale using Optimal Test Assembly Methods: Development of the EPDS-Dep-5. / Harel, Daphna; Levis, Brooke; Ishihara, Miyabi; Levis, Alexander W; Vigod, Simone N; Howard, Louise M; Thombs, Brett D; Benedetti, Andrea; DEPRESsion Screening Data (DEPRESSD) EPDS Collaboration.
In: ACTA PSYCHIAT SCAND, Vol. 143, No. 4, 13272, 04.2021, p. 348-362.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Shortening the Edinburgh Postnatal Depression Scale using Optimal Test Assembly Methods: Development of the EPDS-Dep-5
AU - Harel, Daphna
AU - Levis, Brooke
AU - Ishihara, Miyabi
AU - Levis, Alexander W
AU - Vigod, Simone N
AU - Howard, Louise M
AU - Thombs, Brett D
AU - Benedetti, Andrea
AU - DEPRESsion Screening Data (DEPRESSD) EPDS Collaboration
AU - Bindt, Carola
N1 - © 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
PY - 2021/4
Y1 - 2021/4
N2 - AIMS: This study used a large database to develop a reliable and valid shortened form of the Edinburgh Postnatal Depression Scale (EPDS), a self-report questionnaire used for depression screening in pregnancy and postpartum, based on objective criteria.METHODS: Item responses from the 10-item EPDS were obtained from 5,157 participants (765 major depression cases) from 22 primary screening accuracy studies that compared the EPDS to the Structured Clinical Interview for DSM (SCID). Unidimensionality of the EPDS latent construct was verified using confirmatory factor analysis, and an item response theory model was fit. Optimal test assembly (OTA) methods identified a maximally informative shortened form for each possible scale length between 1 and 9 items. The final shortened form was selected based on pre-specified validity and reliability criteria and non-inferiority of screening accuracy of the EPDS as compared to the SCID.RESULTS: A 5-item short form of the EPDS (EPDS-Dep-5) was selected. The EPDS-Dep-5 had a Cronbach's alpha of 0.82. Sensitivity and specificity of the EPDS-Dep-5 for a cutoff of 4 or greater were 0.83 (95% CI, 0.73, 0.89) and 0.86 (95% CI, 0.80, 0.90) and were statistically non-inferior to the EPDS. The correlation of total scores with the full EPDS was high (r = 0.91).CONCLUSION: The EPDS-Dep-5 is a valid short form with minimal loss of information when compared to the full-length EPDS. The EPDS-Dep-5 was developed with OTA methods using objective, pre-specified criteria, but the approach is data-driven and exploratory. Thus, there is a need to replicate results of this study in different populations.
AB - AIMS: This study used a large database to develop a reliable and valid shortened form of the Edinburgh Postnatal Depression Scale (EPDS), a self-report questionnaire used for depression screening in pregnancy and postpartum, based on objective criteria.METHODS: Item responses from the 10-item EPDS were obtained from 5,157 participants (765 major depression cases) from 22 primary screening accuracy studies that compared the EPDS to the Structured Clinical Interview for DSM (SCID). Unidimensionality of the EPDS latent construct was verified using confirmatory factor analysis, and an item response theory model was fit. Optimal test assembly (OTA) methods identified a maximally informative shortened form for each possible scale length between 1 and 9 items. The final shortened form was selected based on pre-specified validity and reliability criteria and non-inferiority of screening accuracy of the EPDS as compared to the SCID.RESULTS: A 5-item short form of the EPDS (EPDS-Dep-5) was selected. The EPDS-Dep-5 had a Cronbach's alpha of 0.82. Sensitivity and specificity of the EPDS-Dep-5 for a cutoff of 4 or greater were 0.83 (95% CI, 0.73, 0.89) and 0.86 (95% CI, 0.80, 0.90) and were statistically non-inferior to the EPDS. The correlation of total scores with the full EPDS was high (r = 0.91).CONCLUSION: The EPDS-Dep-5 is a valid short form with minimal loss of information when compared to the full-length EPDS. The EPDS-Dep-5 was developed with OTA methods using objective, pre-specified criteria, but the approach is data-driven and exploratory. Thus, there is a need to replicate results of this study in different populations.
U2 - 10.1111/acps.13272
DO - 10.1111/acps.13272
M3 - SCORING: Journal article
C2 - 33354768
VL - 143
SP - 348
EP - 362
JO - ACTA PSYCHIAT SCAND
JF - ACTA PSYCHIAT SCAND
SN - 0001-690X
IS - 4
M1 - 13272
ER -