Combined erectile dysfunction tests (EDITS, IIEF, SEAR,) (CEDT)

1. Abstract

The Combined Erectile Dysfunction Tests (CEDT) represents an integrative, patient-reported outcome battery engineered to capture the multi-layered clinical, psychological, and relational sequelae of erectile dysfunction (ED) and its therapeutic interventions. Rather than relying solely on physiological endpoints or isolated subjective ratings, the CEDT synthesizes three psychometrically established, gold-standard instruments: the Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS), the abridged 5-item version of the International Index of Erectile Function (IIEF-5 / Sexual Health Inventory for Men [SHIM]), and the Self-Esteem and Relationship Quality (SEAR) survey. Comprising 30 standardized items in its clinical synthesis (11 items for EDITS, 5 diagnostic items for IIEF-5, and 14 items for SEAR), the battery assesses three distinct yet interwoven domains: therapeutic treatment satisfaction and partner concordance, objective-functional severity of erectile impairment, and psychosocial well-being encompassing sexual relationship satisfaction and self-esteem.

The EDITS module uses a 5-point Likert scale (0–4) normalized to a 0–100 scale, capturing treatment efficacy, side effects, ease of administration, and partner satisfaction. The IIEF-5 module captures functional severity across a 5-point ordinal scale (with 0 representing no sexual attempts), categorizing scores between 5 and 25 into five clinical tiers: severe (5–7), moderate (8–11), mild-to-moderate (12–16), mild (17–21), and no ED (22–25). The SEAR module captures psychological and relational recovery using a 5-point frequency format (1 = almost never/never to 5 = almost always/always), yielding transformed subscale scores from 0 to 100 across Sexual Relationship Satisfaction and Confidence/Self-Esteem. Across validation studies, the component scales exhibit high internal consistency (Cronbach’s alpha ranging from .82 to .95), strong test-retest reliability (intraclass correlation coefficients > .80), clear convergent and discriminant validity against clinician ratings and objective hemodynamic biomarkers, and exceptional sensitivity to pharmacotherapy such as phosphodiesterase type 5 (PDE5) inhibitors.

2. Keywords

Erectile Dysfunction, IIEF-5, SHIM, EDITS, SEAR, Treatment Satisfaction, Self-Esteem, Sexual Relationship Quality, Psychometrics, Patient-Reported Outcome Measures

3. Authors

The Combined Erectile Dysfunction Tests battery compiles the empirical research of prominent investigators in male sexual medicine, urology, and psychometrics:

• Stanley E. Althof, Ph.D. — Professor Emeritus of Psychology in Psychiatry at Case Western Reserve University School of Medicine and Executive Director of the Center for Marital and Sexual Health of South Florida, West Palm Beach, FL, USA. Lead developer of EDITS and co-developer of SEAR.
• Raymond C. Rosen, Ph.D. — Professor of Psychiatry and Medicine at Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ, and Chief Scientist at HealthCore/New England Research Institutes, Watertown, MA, USA. Primary architect of the International Index of Erectile Function (IIEF and IIEF-5).
• Joseph C. Cappelleri, Ph.D., MPH — Senior Director of Biostatistics at Pfizer Inc., Groton, CT, and Adjunct Professor of Statistics at the University of Connecticut, Storrs, CT, USA. Key methodologist and biostatistician in the psychometric validation of the IIEF, EDITS, and SEAR.
• Contributing Consortium Members: Floyd Levine, M.D.; Arthur L. Burnett, M.D.; Kevin T. McVary, M.D.; Allen D. Seftel, M.D.; Raymond Siegel, Ph.D.; Alex Shpilsky, M.S.; and Sumana Duttagupta, Ph.D.

4. Purpose

Erectile dysfunction is fundamentally a biopsychosocial disorder. While vascular, neurological, and endocrine deficits frequently initiate erectile failure, the ensuing performance anxiety, marital discord, loss of masculine self-concept, and treatment-related attrition create secondary psychopathology. Clinical trials and real-world urological assessments often evaluate ED purely via physiological metrics or narrow rigidity scoring. The primary purpose of the Combined Erectile Dysfunction Tests (CEDT) battery is to overcome this reductionist paradigm by integrating functional diagnosis, patient/partner treatment satisfaction, and psychosocial adaptation into an actionable, unified clinical framework.

From a diagnostic and clinical monitoring standpoint, the CEDT achieves three concurrent objectives:

• Therapeutic Efficacy and Continuation Prediction (EDITS): Medical therapies—such as oral PDE5 inhibitors (sildenafil, tadalafil, vardenafil), intracavernosal injections, vacuum erection devices, or penile prostheses—often suffer from high discontinuation rates despite pharmacological success. The EDITS module quantifies patient-perceived efficacy, ease of use, rapidity of onset, duration, partner perceived response, and tolerability, identifying early barriers to adherence.
• Graded Clinical Staging (IIEF-5/SHIM): The IIEF-5 module provides rapid, validated diagnostic stratification of erectile function over the previous 4 weeks. It establishes a baseline severity score (severe, moderate, mild-to-moderate, mild, or normal) against which therapeutic improvements or post-surgical recovery (e.g., following nerve-sparing radical prostatectomy) can be calibrated.
• Psychosocial and Relational Restoration (SEAR): Sexual impairment reverberates directly into psychological distress, systemic performance anxiety, and relational dissatisfaction. The SEAR module isolates improvements in sexual confidence, masculine identity, general self-esteem, and mutual intimate connection, ensuring that physical rigidity translates into psychological well-being.

In clinical trials, the CEDT serves as a comprehensive outcome battery capable of capturing primary functional endpoints alongside secondary patient-reported outcomes (PROs) recognized by regulatory bodies such as the U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA). In routine clinical practice, it enables urologists, psychiatrists, endocrinologists, and sexual medicine therapists to pinpoint whether treatment failures stem from insufficient physiological response, intolerable adverse effects, partner resistance, or psychological distress.

5. Psychological Construct

The CEDT operationalizes erectile health across three interdependent psychological and behavioral constructs:

1. Treatment Satisfaction and Perceived Quality (EDITS Domain)

This construct examines the patient’s subjective evaluation of medical intervention relative to their pre-treatment baseline and post-treatment expectations. Satisfaction is not merely the absence of physiological failure; it is a multi-attribute appraisal combining:

• Treatment Effectiveness: Subjective ratings of hardness, onset latency, and duration of erection sufficient for successful completion of intercourse.
• Treatment Convenience and Tolerability: The degree of invasiveness, ease of administration, and side-effect burden.
• Perceived Partner Impact: The patient’s perception of partner comfort, acceptance, and enthusiasm regarding continuation of the therapy.

2. Functional Erectile Capacity (IIEF-5/SHIM Domain)

Functional erectile competence reflects a man’s physiological and psychological capacity to engage in satisfactory sexual intercourse. The construct is grounded in five core dimensions: confidence in achieving and maintaining an erection, penetration capacity (rigidity), maintenance frequency after penetration, maintenance endurance to completion of intercourse, and overall intercourse satisfaction. Deficits in this construct capture the physiological breakdown of cavernosal smooth muscle relaxation, arterial inflow, and the veno-occlusive mechanism.

3. Sexual Self-Esteem and Relational Well-Being (SEAR Domain)

The SEAR construct captures the psychosocial sequelae of sexual impairment and recovery. It is delineated into two primary subscales:

• Sexual Relationship Satisfaction: Evaluates comfort, spontaneity, intimacy, and initiation of sexual encounters, alongside the perception of the partner’s sexual enjoyment and satisfaction.
• Confidence and Self-Esteem: Measures general self-worth, feelings of personal wholeness, masculinity, and emotional stability. Erectile impairment frequently triggers an existential threat to traditional masculine identity; this construct assesses the degree to which restored sexual function mitigates feelings of failure and restores self-efficacy.

6. Theoretical Framework

The CEDT is rooted in the Biopsychosocial Model of Sexual Health, initially posited by George Engel and adapted for male sexual dysfunction by Helen Singer Kaplan, William H. Masters, and Virginia E. Johnson. Under this framework, erectile capacity is neither solely neurovascular nor purely cognitive-affective; it emerges from a continuous reciprocal feedback loop among neurovascular integrity, intrapsychic processes, and dyadic interpersonal dynamics.

The Cognitive-Behavioral Cycle of Performance Anxiety

According to cognitive models of sexual dysfunction (Barlow, 1986), an initial episode of erectile insufficiency triggers negative affect, automatic catastrophic cognitions (“I am failing as a partner; I am losing my masculinity”), and a shift of attention from erotic cues to self-monitoring (spectatoring). This heightened sympathetic nervous system arousal induces adrenergic vasoconstriction in the corpora cavernosa, biochemically counteracting nitric oxide-mediated vasodilation and guaranteeing subsequent erectile collapse. The CEDT’s incorporation of the IIEF-5 isolates the physiological output of this loop, while the SEAR isolates the intrapsychic cognitive appraisal and affect.

Expectancy-Disconfirmation Theory

The EDITS component is grounded in Oliver’s (1980) Expectancy-Disconfirmation Model from cognitive psychology. Treatment satisfaction is modeled not as an absolute physiological state, but as the mathematical disparity between prior cognitive expectations and perceived post-therapeutic reality. If a phosphodiesterase type 5 (PDE5) inhibitor produces sufficient rigidity but fails to meet an unrealistic expectation of instantaneous, spontaneous, or adolescent-like performance, psychological disconfirmation occurs, leading to dissatisfaction and medication abandonment. By quantifying expectations, naturalness, and partner harmony, EDITS operationalizes this cognitive-evaluative interface.

7. Validity

The CEDT battery possesses extensive construct, criterion, convergent, and discriminant validity established across multinational, multi-center clinical trials involving thousands of men with diverse ED etiologies (vasculogenic, neurogenic, psychogenic, diabetic, and post-prostatectomy).

Construct and Structural Validity

In foundational validation studies by Rosen et al. (1997, 1999), Cappelleri et al. (1999, 2004), and Althof et al. (1999), each module underwent confirmatory factor analysis and structural equation modeling. The IIEF-5 items demonstrated high factor loadings (> .75) onto a single, robust erectile function dimension, distinguishing between clinically diagnosed ED patients and age-matched controls with a sensitivity of 89% and specificity of 84% at the validated diagnostic cut-off of 21.

Convergent and Discriminant Validity

Convergent validity is documented across several domains:

• IIEF-5 scores correlate strongly (r = .70 to .85, p < .001) with clinical diary recordings of successful penetration (SEP2) and successful completion of intercourse (SEP3).
• SEAR subscale scores correlate significantly with global quality of life indices (SF-36 Mental Health Index: r = .48 to .62, p < .001) and Beck Depression Inventory scores (r = -.45 to -.58, p < .001), while displaying discriminant validity through low correlations with unrelated somatic physical indices.
• EDITS scores correlate moderately to strongly with IIEF erectile function improvement (r = .55 to .72), while capturing distinct variance related to partner concordance and procedural convenience that physiological measures cannot account for.

Predictive and Evaluative Validity (Treatment Responsiveness)

The battery shows marked sensitivity to change across double-blind, placebo-controlled trials. In pharmacotherapy trials involving sildenafil, tadalafil, and vardenafil, men receiving active therapy demonstrated statistically significant and clinically meaningful gains across all three CEDT modules (p < .001 vs. placebo), with effect sizes (Cohen’s d) exceeding 0.85 on IIEF-5, 0.70 on SEAR Sexual Relationship and Self-Esteem domains, and EDITS satisfaction scores averaging > 75 on the 0–100 transformed scale.

8. Reliability

The CEDT modules demonstrate strong psychometric reliability across internal consistency and temporal stability metrics:

Internal Consistency

Across diverse clinical and general population samples, internal consistency coefficients have consistently surpassed conventional psychometric thresholds:

• EDITS: Cronbach’s alpha ranges from .82 to .90 across validation studies (Althof et al., 1999), reflecting a coherent, unidimensional treatment satisfaction construct with minimal item redundancy.
• IIEF-5 / SHIM: Demonstrates high internal consistency with Cronbach’s alpha values between .88 and .93 in both clinical trial and outpatient primary care cohorts (Rosen et al., 1999; Cappelleri et al., 1999).
• SEAR: The overall SEAR questionnaire yields an overall Cronbach’s alpha of .91 to .95. Subscale alphas remain high: Sexual Relationship Satisfaction (α = .86 to .91), Overall Confidence / Self-Esteem (α = .84 to .89), and Dyadic Relationship Satisfaction (α = .76 to .82) (Cappelleri et al., 2004).

Test-Retest Reliability

In stable, untreated baseline cohorts or maintenance pharmacotherapy cohorts evaluated over 2- to 4-week intervals, temporal stability is strong:

• IIEF-5 intraclass correlation coefficients (ICCs) range between .82 and .89.
• EDITS test-retest reliability across a 4-week stable regimen shows Pearson r and ICC values of .80 to .88.
• SEAR test-retest stability coefficients range from .78 to .86 across all transformed domain scores.

9. Factor Analysis

Extensive exploratory and confirmatory factor analyses (EFA and CFA) have established the empirical distinctiveness and hierarchical structure of the CEDT instruments.

IIEF-5 Factor Structure

The abridged IIEF-5 was derived from an original 15-item parent instrument containing 5 functional factors. EFA utilizing principal component analysis with varimax rotation revealed that items 12 through 16 loaded onto a single dominant factor accounting for over 72% of total functional variance. In CFA models, standardized factor loadings for all 5 items range from .76 to .91, confirming that confidence, penetration ability, maintenance duration, maintenance completion, and intercourse satisfaction represent a single unidimensional latent trait of functional severity.

SEAR Factor Structure

Confirmatory factor analysis conducted on the 14-item SEAR survey (Cappelleri et al., 2004) substantiated a two-factor second-order hierarchical construct:

• Factor 1: Sexual Relationship Satisfaction (Items 17–24), with primary factor loadings ranging from .68 to .85. Cross-loadings on non-relational domains were negligible (< .20).
• Factor 2: Confidence / Self-Esteem (Items 25–30), with factor loadings between .64 and .88, encapsulating masculine wholeness, generalized self-worth, and existential locus of control.
• Model fit indices confirmed strong data fit: Comparative Fit Index (CFI = .96), Tucker-Lewis Index (TLI = .95), and Root Mean Square Error of Approximation (RMSEA = .048; 90% CI: .039–.057).

EDITS Structural Configuration

Factor analysis of the EDITS scale identified a robust primary factor explaining greater than 60% of common variance, with secondary partner-concordance items loading coherently on an interpersonal sub-dimension. Factor loadings for items evaluating overall satisfaction, expectation fulfillment, and continuation willingness all exceeded .70.

10. Instrument / Measurement Tool

The Combined Erectile Dysfunction Tests battery is a structured, patient-administered questionnaire containing 30 items. Administration requires approximately 10 to 15 minutes.

Structural Specifications:

• Total Item Count: 30 items (Items 1–11: EDITS; Items 12–16: IIEF-5/SHIM; Items 17–30: SEAR).
• Target Population: Adult men (aged 18 and older) presenting with self-reported or clinically documented erectile dysfunction who are undergoing, or being evaluated for, medical/psychological therapy.
• Recall Period: Past four weeks across all modules.
• Response Scale (Verbatim Format):
  • Items 1-11 (EDITS): 5-point Likert scale (0=Very dissatisfied/Not at all to 4=Very satisfied/Completely, or 0=Not receiving treatment).
  • Items 12-16 (IIEF-5/SHIM): 5-point Likert scale (1 to 5, plus 0=No sexual activity where applicable).
  • Items 17-30 (SEAR): 5-point Likert scale (1=Almost never/Never to 5=Almost always/Always).
• Scoring and Transformation Algorithms:
  • EDITS Scoring (Items 1–11): Items are summed and averaged to yield a mean raw item score (range: 0.0 to 4.0). This mean score is multiplied by 25 to establish a normalized 0 to 100 continuous index. Higher scores denote superior treatment satisfaction. Scores > 50 represent positive treatment response, with scores ≥ 75 indicating substantial clinical satisfaction. If a patient is not receiving treatment, this section is omitted or coded 0.
  • IIEF-5 / SHIM Scoring (Items 12–16): Summed directly to produce an integer score ranging from 5 to 25. Established clinical severity strata:
    • 22–25: No erectile dysfunction (normal functional capacity).
    • 17–21: Mild erectile dysfunction.
    • 12–16: Mild-to-moderate erectile dysfunction.
    • 8–11: Moderate erectile dysfunction.
    • 5–7: Severe erectile dysfunction.
  • SEAR Scoring (Items 17–30): Raw domain scores are transformed to a 0–100 scale using the standard psychometric formula: Transformed Score = 100 * [(Actual Raw Score - Minimum Possible Score) / (Maximum Possible Score - Minimum Possible Score)]. Higher scores indicate superior sexual relationship quality, self-esteem, and personal confidence.

11. Permissions & Fee and Test Year

The components of the CEDT battery were developed and published across late 1990s and early 2000s psychometric initiatives:

• Publication Years: IIEF / IIEF-5 (Rosen et al., 1997, 1999); EDITS (Althof et al., 1999); SEAR (Cappelleri et al., 2004).
• Intellectual Property and Copyright: The individual scales—IIEF, EDITS, and SEAR—are copyrighted by their respective developers and sponsoring research entities (including original development funding and copyright management by Pfizer Inc. and academic consortia).
• Licensing and Academic Use: For non-commercial clinical practice, academic research, and investigator-initiated non-funded academic studies, the instruments are typically accessible without fee, subject to proper academic citation and attribution. For sponsored commercial clinical trials, electronic health record (EHR) digital integration, or pharmaceutical evaluations, formal licensing agreements and permission approvals must be obtained through the respective copyright holders or commercial management repositories (e.g., Mapi Research Trust / PROQOLID).

12. References

Below are primary references documenting the psychometric development, clinical validation, and scoring algorithms of the CEDT components:

• Althof, S. E., Corty, E. W., Levine, S. B., Levine, F., Burnett, A. L., McVary, K., Stecher, V., & Seftel, A. D. (1999). EDITS: Development of questionnaires for evaluating satisfaction with treatments for erectile dysfunction. Urology, 53(4), 793–799. https://doi.org/10.1016/S0090-4295(98)00609-8
• Cappelleri, J. C., Althof, S. E., Siegel, R. L., Shpilsky, A., Bell, S. S., & Duttagupta, S. (2004). Development and validation of the Self-Esteem And Relationship (SEAR) questionnaire in erectile dysfunction. International Journal of Impotence Research, 16(1), 30–38. https://doi.org/10.1038/sj.ijir.3901160
• Cappelleri, J. C., Rosen, R. C., Smith, M. D., Mishra, A., & Osterloh, I. H. (1999). Diagnostic evaluation of the erectile function domain of the International Index of Erectile Function. Urology, 54(2), 346–351. https://doi.org/10.1016/S0090-4295(99)00150-8
• Rosen, R. C., Cappelleri, J. C., Smith, M. D., Lipsky, J., & Peña, B. M. (1999). Development and evaluation of an abridged, 5-item version of the International Index of Erectile Function (IIEF-5) as a diagnostic tool for erectile dysfunction. International Journal of Impotence Research, 11(6), 319–326. https://doi.org/10.1038/sj.ijir.3900472
• Rosen, R. C., Riley, A., Wagner, G., Osterloh, I. H., Kirkpatrick, J., & Mishra, A. (1997). The International Index of Erectile Function (IIEF): A multidimensional scale for assessment of erectile dysfunction. Urology, 49(6), 822–830. https://doi.org/10.1016/S0090-4295(97)00238-0

13. Items of the Scale