Nickan Research Institute Journal of Renal Injury Prevention 2345-2781 4 4 2015 12 01 The prevalence of hypercalciuria in girl kids with over active bladder 117 119 10.12861/jrip.2015.25 EN Parsa Yousefichaijan Mohammad Rafiei Atefeh Aziminejad Abdolghader Pakniyat Journal Article 10.12861/jrip.2015.25 Introduction: Hypercalciuria may be a sign of over active bladder, these symptoms may be treated if we get rid of hypercalciuria. Objectives: This paper is intended to get to the prevalence of hypercalciuria in girl kids with over active bladder. Patients and Methods: All patients with index of over active urinary bladder who admitted to Amir-Kabir hospital of Arak and children who have admitted without any particular disease just for a laboratory check were studied simultaneously. Urine sample was taken from both groups. Results: The prevalence of hypercalciuria in the group with normal urinary bladder was 22.6% and in the case group was 42.9%. Hypercalciuria was reported in 30 (22.6%) children of control group and 57 (42.9%) children of case group. Based on chi-square test, hypercalciuria distribution between the two groups is not homogeneous (P = 0.001). Mean calcium to creatinine ratios were 2.384330 ± 0.55694 (mg/mg) and 2.186552 ± 0.56714 (mg/mg) for control and case groups respectively and no significant difference is observed between the two groups (P = 0.976). Based on logistic regression test, there is a significant relationship between both case and control groups and the occurrence of hypercalciuria with 2.58 times more than control group observed in case group. Conclusion: Based on the high prevalence of hypercalciuria in case group, examination and treatment of hypercalciuria in patients with over active bladder may be effective.