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  • Title: [Ultrasonic kidney size measurement. 2. In normal adolescents].
    Author: Tajima M.
    Journal: Hinyokika Kiyo; 1987 Nov; 33(11):1742-8. PubMed ID: 3328506.
    Abstract:
    Ultrasonography of both kidneys was performed, on 231 male and 220 females normal junior and senior high school age adolescents. 12 and 20 years. Kidneys grew in correlation with the age, height and body weight. 1) Relationship between the kidney length and the age was y (mm) = 1.747x + 67,663 with 0.489 correlation coefficient and less than 1% risk rate in males, and y (mm) = 1.550x + 76,719 with 0.374 correlation coefficient and less than 1% risk rate in females. 2) Relationship between the kidney length and the height was y (mm) V 0.305x + 43.852 with 0.360 correlation coefficient and less than 1% risk rate in males, and y (mm) = 0.589x + 9.042 with 0.367 correlation coefficient and less than 1% risk rate in females. 3) Relationship between the kidney length and the body weight was y (mm) = 0.290x + 78.258 with 0.373 correlation coefficient and less than 1% risk rate in males, and y (mm) = 0.490x + 76,286 with 0.450 correlation coefficient and less than 1% risk rate in females. No difference the right and left kidney length was recognized in either sex. The growth of female kidneys was faster than that of male kidneys between the ages of 14-17. No difference was observed in length of the right or left kidney or sex with the age group of 18 or over.
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