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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Urology 1/2015

Correlation between psychological stress levels and the severity of overactive bladder symptoms

Zeitschrift:
BMC Urology > Ausgabe 1/2015
Autoren:
Henry Lai, Vivien Gardner, Joel Vetter, Gerald L Andriole
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

HL contributed to the conception, design, analysis and interpretation of the data. In addition, HL also drafted the manuscript, and agreed to be accountable for the accuracy and all other aspects of the work. VG contributed to the design of the study, participant recruitment and acquisition of the data, and revised the manuscript critically. JV contributed to the statistical analysis and interpretation of the data, design and construction of the database, data entry and management, revised the manuscript critically, and agreed to be accountable for the accuracy of the statistical analysis. GA contributed to the design of the study. All authors read and approved the final manuscript.

Abstract

Background

The relationship between psychological stress and interstitial cystitis/bladder pain syndrome (IC/BPS) has been well described. Even though there is some overlapping of symptoms between overactive bladder (OAB) and IC/BPS, there have been very few studies that specifically investigated the relationship between psychological stress and urinary symptoms in OAB patients who do not have pelvic pain. Here we examined the relationship between psychological stress levels and the severity of overactive bladder (OAB) symptoms.

Methods

Patients diagnosed with OAB (n=51), IC/BPS (n=27), and age-matched healthy controls (n=30) participated in a case control study that inquired about their psychological stress levels using the perceived stress scale (PSS). PSS reported by the three patient groups were compared. Among OAB patients, their responses on the PSS was correlated to OAB symptoms using the following questionnaires: 1) international consultation on incontinence – urinary incontinence (ICIQ-UI), 2) international consultation on incontinence – overactive bladder (ICIQ-OAB), 3) OAB-q short form, 4) urogenital distress inventory (UDI-6), 5) incontinence impact questionnaire (IIQ-7), 6) urgency severity scale (USS), 7) numeric rating scales of urgency symptom, and 8) frequency symptom. Spearman’s correlation tests were performed to examine the relationship between psychological stress levels and the severity of OAB symptoms.

Results

OAB patients reported psychological stress levels that were as high as IC/BPS patients (median 17.0 versus 18.0, p=0.818, Wilcoxon sum rank test), and significantly higher than healthy controls (17.0, versus 7.5, p=0.001). Among OAB patients, there was a positive correlation between perceived stress levels and urinary incontinence symptoms (ICIQ-UI, Spearman’s correlation coefficient=0.39, p=0.007), and impacts on quality of life (UDI-6, IIQ-7, OAB-q quality of life subscale; Spearman’s correlation coefficient=0.32, 0.31, 0.39, and p=0.028, 0.005, 0.029, respectively). No significant correlation was observed between perceived stress levels and urgency or frequency symptoms (ICIQ-OAB, USS, numeric ratings of urgency and frequency).

Conclusions

OAB patients reported psychological stress levels that were as high as IC/BPS patients, and significantly higher than healthy controls. There was a positive correlation between perceived stress levels and urinary incontinence symptoms, and its impacts on quality of life among OAB patients.
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