Background and purpose: Bipolar disorder is a severe psychiatric disorder with a variety of natural courses and manifestations, and a recurrent nature. The aim of this study was to determine the effective factors on recurrence using Andersen-Gill counting process model. Materials and methods: In an ambidirectional cohort study (4 years retrospective and 1 year prospective from 2007 to 2012), 2...

Drug addiction is a serious threat to the health of individuals. Not only does this affect the life of the individual, it also creates many disadvantages and deficits for the family and society. Substance-dependent individuals are considered socially vulnerable. Unfortunately, addiction recurrence has many effects on the individual, society, and family. An individual who returns toward the subs...

Introduction: Febrile seizure is the most common type of seizure that occurs in 3– 4% of children below the age of 5 years. The purpose of this study was to determine the frequency of recurrence of febrile and afebrile seizures after the first febrile seizure. Methods: In a descriptive prospective study, 139 children (6months to 6years old) admitted between March 2004and August 2005 at Yazd Sh...

Introduction: Seizure is the most common pediatric neurology problem that occurs in 10% of children. The purpose of this study was to determine the recurrence rate of seizures after one year and its relationship with paraclinical findings of the first attack. Methods : In a historical cohort analytic study , 131 children with first seizure admitted to Shaheed Sadoughi Hospital between March ...

Background: Meningiomas are common benign tumors of the brain. Meningioma patients have optimal functional recovery after surgical removal of their tumors. Some patients experience recurrence months or years after surgical resection. In this study, we try to determine the prevalence of recurrent meningioma and the correlation between recurrence and certain factors. Methods: This retrospective ...

Background and Aim: Psoriasis is an inflammatory skin disease, which is related to the immune system and is characterized by the rapid growth of skin cells. The aim of this study was to investigate some risk factors in psoriasis and also to check that whether the rate of recurrence is fixed or variable in different seasons by using a time-dependent coefficients rate model. Methods: After rev...

Introduction: Meningioma is a benign tumor of the brain, which shows a good response to treatment, surgery and benign pathology, but there is a possibility of recurrence. Therefore, the present study was conducted to investigate the relationship between recurrent meningioma risk factors and the rate of meningioma recurrence in Yazd City. Methods: This descriptive-analytical study was performed...