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literature on the prevalence of BPS  

ESSIC uses the name bladder pain syndrome (BPS) instead of interstitial cystitis (IC) and/or painful bladder syndrome (PBS):
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  • Prevalence of interstitial cystitis symptoms in a managed care population.
    Clemens JQ, Meenan RT, O'Keeffe Rosetti MC, et al. J Urol 2005;174:576-80
    • IC symptoms were defined in 2 ways, that is as 1) pelvic pain at least 3 months in duration plus urgency or frequency at least 3 months in duration and 2) the same criteria plus pain increasing as the bladder fills and/or pain relieved by urination
    • the prevalence of IC symptoms according to definitions 1 and 2 was 11.2% and 6.2% in women, and 4.6% and 2.3% in men, respectively

    the authors conclude that the prevalence of IC symptoms is 30 to 50-fold higher in women and 60 to 100-fold higher in men than the prevalence of a coded physician diagnosis of IC in the same population
    • these findings suggest that IC may be significantly under diagnosed
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