Edinburgh Postnatal Depression Scale (EPDS)

Abstract

The Edinburgh Postnatal Depression Scale (EPDS) is a 10-item self-report instrument developed in 1987 by J.L. Cox, J.M. Holden, and R. Sagovsky. It was created specifically as a specialized screening tool to identify symptoms of postnatal depression (PND) in women, addressing the lack of sensitivity in existing scales that often included somatic symptoms normal for the postpartum period. The EPDS is designed to be brief and easily administered by non-psychiatric health professionals, such as community health workers, facilitating widespread use in clinical settings. Although initially validated for postnatal women, the scale is now used extensively worldwide for screening during both the antenatal and postnatal periods, and has also been validated for use with fathers.

Keywords

Edinburgh Postnatal Depression Scale, EPDS, Postnatal Depression, Antenatal, Perinatal Mental Health, Screening Tool, PND, Psychometrics, Perinatal Screening.

Authors

J.L. Cox, J.M. Holden, R. Sagovsky

Purpose

The primary purpose of the EPDS is to quickly and reliably screen individuals during the perinatal period for clinically significant depressive symptoms. The scale was a necessary development because traditional depression measures often included somatic symptoms—such as sleep disturbance or lack of energy—which are common physiological experiences following childbirth, leading to inflated scores and false positives among non-depressed postnatal women. The EPDS successfully minimized these confounding factors by focusing on cognitive and affective symptoms (Cox et al., 1987).

Although the EPDS is a highly effective screening tool used extensively in both clinical practice and research, it is explicitly not designed to provide a definitive psychiatric diagnosis. The results function as an indicator of the likelihood of depressive symptoms, and scores suggesting moderate or high risk must always be followed up immediately with further comprehensive assessment by a qualified clinician, typically involving a structured diagnostic interview (Kernot et al., 2015).

Construct

The EPDS primarily measures the psychological construct of depressive symptomatology tailored specifically to the unique emotional and psychological landscape of the perinatal period. The 10 items assess feelings related to anxiety, self-blame, enjoyment, and suicidal ideation over the preceding seven days.

While often treated as a unidimensional measure of overall postnatal distress, factor analytic studies frequently suggest a multidimensional structure. Some researchers propose a two-factor model, where 8 items measure core depression symptoms and 2 items capture anxiety (Guedeney et al., 2000; Matthey et al., 2001). This indicates that the scale effectively captures the common co-occurrence of depressive and anxious symptoms in new parents.

Validity

The validity of the EPDS has been established through numerous studies across different countries and populations. In the initial validation study, the EPDS successfully discriminated between depressed and non-depressed mothers when compared against the Standardized Psychiatric Interview. Using a cut-off score of 12/13, the scale achieved a sensitivity (true positives) of 86% and a specificity (true negatives) of 78% (Cox et al., 1987).

Subsequent reviews, such as one analyzing 18 validation studies, reaffirmed its clinical utility, finding sensitivity levels ranging from 65% to 100% and specificity levels from 49% to 100% (Eberhard-Gran et al., 2001). The EPDS also demonstrates strong concurrent validity, showing significant correlations with other established measures of psychological distress, including the General Health Questionnaire (r=0.72) and the Pitt Scale for postnatal depression (r=0.67) (Boyce et al., 1993). Validation has also extended beyond mothers, demonstrating effectiveness in discriminating between distressed and non-distressed fathers (Matthey et al., 2001).

Reliability

The EPDS exhibits high levels of internal consistency and test-retest stability. In the original development study, the scale achieved strong internal consistency, reporting a split-half reliability coefficient of 0.88 and a standardized coefficient of 0.87 (Cox et al., 1987).

Longitudinal studies have consistently reinforced these findings. Research examining the temporal stability of the English version of the scale found a high test-retest reliability coefficient of 0.92 (Kernot et al., 2015). This high level of reliability ensures that the measure provides consistent results over time, supporting its use in monitoring patient progress and in longitudinal research.

Factor Analysis

The factor structure of the EPDS is often debated, though consensus points toward a strong general factor of distress. While some studies support the use of a single total score, other researchers have proposed a two-factor structure: one factor encompassing eight items related to depression and a second factor comprising two items related to anxiety (Guedeney et al., 2000). Other clinical guidance, such as that provided by Beyond Blue, suggests that three items specifically indicate anxiety symptoms.

It is important to note that cross-cultural validation efforts indicate that optimal cut-off scores and possibly factor loadings may vary significantly across different cultural groups. These variations are often attributed to differences in levels of emotional expressiveness among women in various communities (Matthey et al., 2001). Clinical guidance is therefore necessary for practitioners using the scale cross-culturally, including specific adaptations for women from Aboriginal communities in Australia.

Instrument

Test Type: Self-report screening tool (Psychometric Scale)

Format: The scale consists of 10 items scored on a 4-point Likert scale, with item scores ranging from zero to three. Scores are summed to yield a total score, with some items requiring reverse scoring. The scale assesses feelings experienced over the past seven days.

Language Available: Translated and validated into more than twelve languages.

Population Group: Perinatal population (prenatal women, postnatal women, and postnatal fathers).

Age Group: Adults (specifically those experiencing pregnancy or early parenthood).

Population Details: Originally validated on 84 mothers in Edinburgh. Widely validated on diverse international samples, including Australian populations, and adapted for use with men in the postnatal period.

Test Methodology: Respondents select the statement that best reflects their feelings over the preceding week. Recommended cut-off scores vary based on the population being screened:

• Postnatal Women: A score of 0–9 indicates ‘low likelihood’; 10–12 indicates ‘moderate likelihood’; and 13 or above indicates ‘high likelihood’ of depressive symptoms.
• Antenatal Women: The suggested cut-off score for high likelihood is 15.
• Postnatal Men/Fathers: A lower cut-off score of 9/10 is typically used due to men’s generally lower levels of emotional expressiveness.

Keywords

PND, Perinatal Screening, Maternal Health, Paternal Depression, Likert scale, Psychometrics, Anxiety, Sensitivity, Reliability.

Authors

Author ORCID Identifier: N/A (Information not provided in source.)

Affiliation Email addresses: N/A (Information not provided in source.)

Correspondence Address: N/A (Information not provided in source.)

Permissions & Fee and Test Year

The Edinburgh Postnatal Depression Scale was developed and first published in 1987. The tool is highly accessible and is frequently available free of charge for clinical and non-commercial research purposes. It can be accessed online through major mental health organizations, including Beyond Blue (www.beyondblue.org.au) and the Centre for Perinatal Excellence (www.cope.org.au).

Reference’s

• Boyce, P., Stubbs, J. & Todd, A. (1993). The Edinburgh postnatal depression scale: validation for an Australian sample. Australian and New Zealand Journal of Psychiatry, 27, 472-476.
• Cox, J.L., Holden, J.M. & Sagovsky, R. (1987). Detection of postnatal depression: Development of the 10-item Edinburgh postnatal depression scale. British Journal of Psychiatry, 150, 782-786.
• Eberhard-Gran, M., Eskild, A., Tambs, K., Opjordsmoen, S. & Samuelsen, S.O. (2001). Review of validation studies of the Edinburgh postnatal depression scale. Acta Pscychiatr Scand, 104, 243-249.
• Guedeney, N., Fermanian, J., Guelfi, J.D. & Kumar, R.C. (2000) The Edinburgh postnatal depression scale (EPDS) and the detection of major depressive disorders in early postpartum: some concerns about false negatives. Journal of Affective Disorders, 61, 107-112.
• Kernot, J., Olds, T., Lewis, L.K. & Maher, C. (2015) Test-retest reliability of the English version of the Edinburgh Postnatal Depression Scale. Arch Womens Ment Health, 18, 255-257. DOI: 10.1007/s00737-014-0461-4.
• Matthey, S. & Agostini, F. (2017). Using the Edinburgh Postnatal Depression Scale for women and men – some cautionary thoughts. Arch Womens Ment Health, 20, 345-354. DOI: 10.1007/s00737-016-0710-9.
• Matthey, S., Barnett, B., Kavanagh. D.J. & Howie, P. (2001). Validation of the Edinburgh postnatal depression scale for men, and comparison of item endorsement with their partners. Journal of Affective Disorders, 64, 175-184.
• Matthey, S., Henshaw, C., Elliott, S. & Barnett, B. (2006). Variability in use of cut-off scores and formats on the Edinburgh Postnatal Depression Scale – implications for clinical and research practice. Arch Womens Ment Health, 9, 309-315. DOI: 10.10007/s00737-006-0152-x.

Items of the Edinburgh Postnatal Depression Scale (EPDS)

“I have looked forward with enjoyment to things” As much as I always could; Not quite so much now; Definitely not so much now; Not at all

“I have blamed myself unnecessarily when things went wrong” Yes most of the time; Yes, some of the time; Not very often; No, never