Statistical Study on Urolithiasis in Japan

Inada, T; Miyazaki, Shigeru; Omori, Takao; Nihira, Hiromi; Hino, Takeshi

doi:10.1159/000277382

Cited by 31 publications

(23 citation statements)

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“…Idiopathic calcium urolithiasis in the upper urinary tract has become by far the most frequent type of urinary calculi as the life-style and dietary habits in our country have been dramatically westernized with industrialization in a short period of time. Our institute has conducted nationwide surveys on urolithiasis in Japan in 1955 [1,2], 1966 [3] and 1979 [4], With the fourth survey represented here, it was pos sible to analyze the changing patterns of urolithiasis among the Japanese both chronologically and geographi cally, from 1935 through 1985. Important etiological implications of urolithiasis may be clarified by analyzing the accumulated data and comparing data from different countries.…”

Section: Introductionmentioning

confidence: 99%

Epidemiology of Urolithiasis in Japan: A Chronological and Geographical Study

Yoshida

1990

Urol Int

157

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A nationwide survey on urolithiasis in Japan between 1965 through 1987 was carried out, succeeding the previous 1955 and 1966 studies, in an effort to evaluate chronological and geographical changes in urolithiasis among the Japanese people who are relatively racially homogenous and living with similar customs and habits, which have changed dramatically from the old Japanese to westernized modes in a very short period after the Second World War. Incidence of calcium-containing urinary stones in the upper urinary tract has been increasing in Japan since the Second World War with increasing westernization of life-style and industrialization, with the annual incidence of urolithiasis steadily increasing from 53.8/100,000 general population in 1965 to 92.5 in 1985. According to the data, 5.4% of the population may be expected to develop a urinary calculus at least once in their life time. Analysis of 69,949 stones obtained during the years from 1978 to 1987 with infrared analysis showed that 79.4% were calcium oxalate and/or calcium phosphate stones, 7.4% were struvite with or without carbonate apatite, 5.2% were uric acid or urate, and 1.0% were cystine. In the era of new treatment modalities such as the endourological surgery and the extracorporeal shock wave lithotripsy, open surgical treatments were replaced with new types of treatment in about 75%ofthecasesin 1985.

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Section: Introductionmentioning

confidence: 99%

Epidemiology of Urolithiasis in Japan: A Chronological and Geographical Study

Yoshida

1990

Urol Int

157

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“…The incidence of renal stone disease for each year [2,3] was compared with that of the 1940s and the dietary con sumption for each year is shown compared with the data of 1950.…”

Section: Stone Disease and Nutritional Environmentmentioning

confidence: 99%

Nutritional Risk Factors in Calcium Stone Disease in Japan

et al. 1984

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The purpose of this study is to examine the nutritional environment affecting calcium stone disease in Japan. The following results were obtained. Renal stone disease in the late 1970s increased by about three times than that of the 1940s. Fats and oils, animal protein and calcium intake increased remarkably after the second World War and milk plus milk products, meat and animal products were increased surprisingly compared with 1950. The most ingested nutrients of calcium stone formers were not much different from the results of the National Nutritive Survey in Japan. But the ingested amount of calcium was unexpectedly small and did not reach the level of the daily nutritional requirement in Japanese (15 mmol). The ingested amount of total protein correlated with urinary calcium excretion and had the highest coefficient of determination to the urinary calcium excretion by multiple regression analysis. We have finished our research of individual dietary habits and suggest that the following individual dietary guidance is the primary treatment for the prophylaxis of renal stone disease.

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“…Fetter et al [4] state that in their sample, the majority of patients were over 30 and that peak incidence lied in the 5th decade. According to Inada et al [5], in Japan, the frequency of stone-formation is the highest in the age group of 20-30 and has slightly lower values in the 4th to 6th decades. It is rare in the first two, as well as in the 9th decade and over.…”

Section: Introductionmentioning

confidence: 98%

“…In a given population, males are more effected than females, and, according to different authors [3][4][5]8], the ratio of females to males varies from 1:1-3, or even higher. However, as different methods of evaluation have been used and no statistical controls are employed, this ratio does not represent the true incidence for the two sexes.…”

Section: Introductionmentioning

confidence: 99%

The Problem of Stone Formation in the Upper Urinary Tract

Kiesswetter¹,

Parkash²

1972

Urol Int

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Based on the study of 3,219 cases of first admissions to the Urology Department of Wilhelminen Hospital of Vienna, Austria, the problem of stone formation in the upper urinary tract has been statistically investigated. Taking into account the size of the basic populations, it is found that there are about twice as many stone-carrier males than there are females. The left and the right side are stricken with equal frequency, simultaneous bilateral stones are found in only about 15% of thelithiasis cases. Further, whereas for females the incidence of stone formation remains constant from age 20 upwards (the 50–59 age group excepted), for males there is linear increase until about 40–49, after which it remains constant until 69. After this age, there is a significant decrease again. Correlation coefficients between renal lithiasis on the one hand and biliary lithiasis, peptic ulcers and diabetes mellitus on the other are all negligibly small. It is inferred that in the aetiology of stone formation in the upper urinary tract, the conditions prevailing at the site of stone-formation are of greater importance than general metabolic disturbances. It is suggested that more attention be paid to the study of the local conditions.

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Statistical Study on Urolithiasis in Japan

Cited by 31 publications

References 0 publications

Epidemiology of Urolithiasis in Japan: A Chronological and Geographical Study

Epidemiology of Urolithiasis in Japan: A Chronological and Geographical Study

Nutritional Risk Factors in Calcium Stone Disease in Japan

The Problem of Stone Formation in the Upper Urinary Tract

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