Edinburgh Postnatal Depression Scale (EPDS)

Abstract

The Edinburgh Postnatal Depression Scale (EPDS) is a widely utilized, 10-item self-report questionnaire developed to screen for symptoms indicative of prenatal and postpartum depression. Recognized as the most common complication of childbearing, postpartum depression often requires proactive screening due to generally low rates of help-seeking among affected mothers. The EPDS captures the mother’s affective state over the preceding seven days.

While highly effective for screening depressive illness severity, the scale is not designed to diagnose other mental health conditions such as anxiety neuroses, phobias, or personality disorders. If initial results are ambiguous or borderline, repeating the assessment after two weeks is often recommended to track symptom progression and confirm the need for intervention.

Keywords

Edinburgh Postnatal Depression Scale, EPDS, Postpartum depression, Prenatal screening, Maternal health, Screening instrument, Depressive illness, Affective disorders.

Authors

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

Purpose

The primary purpose of the EPDS is to serve as a rapid, accessible screening tool for identifying women who are at risk of developing or currently experiencing a depressive illness during the perinatal period (both pregnancy and the first year postpartum). Given that postpartum depression is a significant public health concern, the EPDS facilitates early identification, which is crucial for timely intervention and improved maternal and infant outcomes.

The scale is specifically designed to distinguish clinical depression from the transient emotional fluctuations often referred to as the “baby blues.” It offers a quick, quantitative measure of symptom severity, allowing clinicians to monitor changes in the mother’s mood and emotional well-being over time. A critical function of the scale is flagging potential suicidal ideation, requiring immediate clinical attention.

Construct

The EPDS primarily measures the psychological construct of perinatal depressive symptomatology. Unlike scales that focus purely on somatic symptoms (which can overlap significantly with normal pregnancy or postpartum fatigue), the EPDS emphasizes cognitive and affective components of depression.

The ten items cover core depressive features, including anhedonia (loss of pleasure), guilt, self-blame, anxiety, panic, difficulty coping, sadness, misery, crying, and, crucially, suicidal ideation (Item 10). The scale thus captures the emotional distress and functional impairment characteristic of a depressive episode in the context of childbearing.

Validity

The EPDS demonstrates strong psychometric properties regarding validity. The original validation study (Cox, Holden, & Sagovsky, 1987) involved 84 mothers and utilized the Research Diagnostic Criteria for depressive illness, derived from Goldberg’s Standardised Psychiatric Interview. This study confirmed that the EPDS possesses satisfactory sensitivity and specificity when identifying depressive illness, and was sensitive to changes in symptom severity over time.

Further meta-analytic reviews, such as those conducted by Milgrom and colleagues (2011), affirm its clinical utility. They found that screening with the EPDS consistently increased identification rates, defining a subgroup of mothers whose depression prevalence was estimated to be between 5-fold and 17-fold greater than the general population. The central estimate of the Positive Predictive Value (PPV) was reported as 62% at a prevalence rate of 6.8%, indicating reliable identification of true positive cases.

Reliability

The reliability of the EPDS is generally considered satisfactory for a screening instrument. Beyond being sensitive to change in the severity of depression over time (indicating good test-retest reliability for tracking treatment response), the scale exhibits high internal consistency across numerous international studies, typically yielding Cronbach’s alpha values in the good range (often between 0.80 and 0.90).

Its consistent performance across diverse cultural and linguistic groups further supports its reliability as a stable measure of perinatal depressive symptoms, making it a globally accepted standard for routine screening in maternal care settings.

Factor Analysis

While the EPDS is scored unidimensionally (as a total score), factor analysis often reveals a multi-factor structure, although the exact number of factors can vary depending on the population and timing of administration (antenatal versus postnatal). Common factor solutions typically identify two or three underlying dimensions:

• A Depression/Anhedonia Factor (e.g., items related to sadness, crying, and loss of pleasure).
• An Anxiety/Panic Factor (e.g., items related to worry, anxiety, and being scared).
• A Suicidal Ideation Factor (Item 10, which is often considered separately due to its paramount clinical urgency).

Despite these underlying factors, the established cut-off scores rely on the total score, confirming its robust utility as a global measure of perinatal distress requiring clinical follow-up. The instrument’s primary utility remains its ability to capture overall symptom burden.

Instrument

Test Type: Self-report questionnaire/Screening tool

Format: 10 items, 4-point Likert scale (ranging from 0 to 3)

Language Available: Over 60 languages (Specific language availability must be confirmed with the copyright holders.)

Population Group: Perinatal women (pregnant or postpartum mothers)

Age Group: Adult women (typically reproductive age)

Population Details: Primarily used in primary care, obstetric, and psychiatric settings globally for routine screening of new or expecting mothers. It is designed to be administered during pregnancy and up to one year postpartum.

Test Methodology: Respondents rate how they have felt during the past 7 days. Scores range from 0 to 30. A score of 13 or higher generally indicates a high probability of depressive illness requiring further clinical judgment and assessment. Item 10, regarding self-harm, must always be reviewed individually.

Keywords

Perinatal mental health, Maternal screening, Depression scale, Anhedonia, Guilt, Suicidal ideation, Psychometrics, Sensitivity, Specificity.

Authors

Author ORCID Identifier: N/A (Scale developed prior to ORCID standardization)

Affiliation Email addresses: Managed by licensing bodies or affiliated universities.

Correspondence Address: Correspondence generally directed through the Royal College of Psychiatrists or academic institutions affiliated with the original developers.

Permissions & Fee and Test Year

The EPDS was first published in 1987. It is often provided free of charge for clinical use, recognizing its importance in public health screening, although formal permissions should always be sought from the copyright holders (typically the Royal College of Psychiatrists) for reproduction, research, or large-scale institutional implementation.

Reference’s

Cox, J.L., Holden, J.M., and Sagovsky, R. 1987. Detection of postnatal depression: Development of the 10-item Edinburgh Postnatal Depression Scale. British Journal of Psychiatry 150:782-786.

Milgrom, J., Ericksen, J., Negri, L., & Glemmil, A. (2011). Screening for postnatal depression in routine primary care: Properties of the EPDS in an Australian sample. Australian and New Zealand Journal of Psychiatry, 39, 833-839.

Items of the Edinburgh Postnatal Depression Scale (EPDS)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

Instructions: As you are pregnant or have recently had a baby, we would like to know how you are feeling. Please check the answer that comes closest to how you have felt IN THE PAST 7 DAYS, not just how you feel today.

1. I have been able to laugh and see the funny side of things
   • 0 As much as I always could
   • 1 Not quite so much now
   • 2 Definitely not so much now
   • 3 Not at all
2. I have looked forward with enjoyment to things
   • 0 As much as I ever did
   • 1 Rather less than I used to
   • 2 Definitely less than I used to
   • 3 Hardly at all
3. I have blamed myself unnecessarily when things went wrong
   • 3 Yes, most of the time
   • 2 Yes, some of the time
   • 1 Not very often
   • 0 No, never
4. I have been anxious or worried for no good reason
   • 0 No, not at all
   • 1 Hardly ever
   • 2 Yes, sometimes
   • 3 Yes, very often
5. I have felt scared or panicky for no very good reason
   • 3 Yes, quite a lot
   • 2 Yes, sometimes
   • 1 No, not much
   • 0 No, not at all
6. Things have been getting on top of me
   • 3 Yes, most of the time I haven’t been able to cope at all
   • 2 Yes, sometimes I haven’t been coping as well as usual
   • 1 No, most of the time I have coped quite well
   • 0 No, I have been coping as well as ever
7. I have been so unhappy that I have had difficulty sleeping
   • 3 Yes, most of the time
   • 2 Yes, sometimes
   • 1 Not very often
   • 0 No, not at all
8. I have felt sad or miserable
   • 3 Yes, most of the time
   • 2 Yes, quite often
   • 1 Not very often
   • 0 No, not at all
9. I have been so unhappy that I have been crying
   • 3 Yes, most of the time
   • 2 Yes, quite often
   • 1 Only occasionally
   • 0 No, never
10. The thought of harming myself has occurred to me
    • 3 Yes, quite often
    • 2 Sometimes
    • 1 Hardly ever
    • 0 Never