Nationwide survey of urolithiasis in Japan

在1955年、1966年、1979年和1990年研究的基础上，日本进行了一项全国性的尿石症调查，以评估日本人上尿路结石的年代学趋势。在1990年和1995年期间，所有被诊断为首发上尿路结石的门诊泌尿科医生都被列举了出来，而不考虑入院和治疗情况。这项研究纳入了所有1,193家日本泌尿科委员会认可的医院，从而几乎涵盖了日本所有执业的泌尿科医生。估计了按性别和年龄分列的年发病率，并与以往全国调查的发病率进行了比较。1995年，经年龄调整的首发上尿路结石年发病率估计为每10万人68.9例（男性100.1例，女性55.4例），从1965年的54.2例稳步上升。除头30年外，所有年龄组的年发病率都有所增加。男女的高峰年龄都向老年方向转移。估计的1965年和1995年之间的纵向变化表明,每年的发病率增加了一倍多的队列在1965年人口普查(从1995年的43.7到1965年的110.9),年轻一代已经逐步年度发病率更高,从这些结果,每年的发病率上尿路石头在日本稳步增长在过去30年,并将继续这样做在不久的将来,但它仍然比在美国要低。

A nationwide survey of urolithiasis in Japan was made that succeeded previous studies done in 1955, 1966, 1979, and 1990, in order to evaluate the chronological trend of upper urinary tract stones in Japanese. All outpatient visits to urologists that resulted in a diagnosis of first-episode upper urinary tract stones in the years 1990 and 1995 were enumerated, irrespective of admission and treatment The study enrolled all of the 1,193 Japanese Board of Urology Approved Hospitals, thereby covering nearly all the urologists practicing in Japan. The annual incidence by sex and age was estimated and compared with the incidences in the previous nationwide surveys. The age-adjusted annual incidence of first-episode upper urinary tract stones in I 995 was estimated as 68.9 per 100,000 (100.1 in men and 55.4 in women), a steady increase from 54.2 in 1965. The annual incidence has increased in all age groups, except in those of the first 3 decades. The peak age for both sexes has shifted in the elderly direction. Estimations of longitudinal changes between 1965 and 1995 showed that the annual incidence has more than doubled for the cohort of the census population in 1965 (from 43.7 in 1965 to 110.9 in 1995) and that younger generations have had progressively higher annual incidences, From these results, the annual incidence of upper urinary tract stones in Japan has increased steadily over the past 30 years and will continue to do so in the near future, but it still is lower than in the United States.