Differences between bothersome and non-bothersome night-time frequency

Koji Yoshimura, Toshiyuki Kamoto, Yasunori Oka, Taiji Tsukamoto, Kiyoshi Oshiro, Yoshimi Suzukamo, Naoko Kinukawa, Osamu Ogawa

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Aims: To determine the distributions of bothersome and non-bothersome nocturnal voiding and the differences between them using a community-based study. Subjects and Methods: A total of 2,205 men and women aged 41-70 years from three Japanese towns responded to our postal questionnaire survey. The questionnaire included the International Prostate Symptom Score, Pittsburgh Sleep Quality Index (PSQI), Medical Outcome Study Short Form-8, medical history of several diseases, and history of cigarette smoking and alcohol consumption. We chose subjects who had one or two episodes of nocturnal voiding per night and divided them into two subgroups based on the answer to a question on trouble sleeping due to nocturnal voiding in the PSQI. We compared data regarding lower urinary tract symptoms (LUTS), sleep, and general health-related quality of life (GHQL) among these subgroups. Results: Of the subjects: 314 (14.2%), 693 (31.4%), 149 (6.8%), and 168 (7.6%) had once-bothersome, once-non-bothersome, twice-bothersome, and twice-non-bothersome nocturnal voiding per night, respectively. Regarding LUTS, the twice-bothersome nocturnal voiding group had the worst and the once-non-bothersome group had the best scores while the once-bothersome and twice-non-bothersome nocturnal voiding groups had equivalent scores. Regarding sleep and GHQL, trouble sleeping but not the frequency of nocturnal voiding per se affected the scores. The twice-non-bothersome nocturnal voiding group generally had better scores than the once-bothersome group, while the former had more frequent nocturnal voiding. Conclusions: Sleep and GHQL of subjects with mild (once or twice) night-time frequency are considerably impacted by sleeping troubles.

Original languageEnglish
Pages (from-to)1014-1019
Number of pages6
JournalNeurourology and Urodynamics
Issue number7
Publication statusPublished - 2007


  • Insomnia
  • Nocturia
  • Quality of life
  • Sleep


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