International Journal of Scientific and Research Publications, Volume 4, Issue 9, September 2014 1 ISSN 2250-3153 www.ijsrp.org Stochastic Model to Find the Estrogen Therapy on Gallbladder Disease Using Normal Distribution P. Senthil Kumar * A. Dinesh Kumar ** & M. Vasuki *** * Assistant Professor, Department of Mathematics, Rajah Serfoji Government College (Autonomous), Thanjavur, Tamilnadu, India. Email: senthilscas@yahoo.com. ** Assistant Professor, Department of Mathematics, Dhanalakshmi Srinivasan Engineering College, Perambalur, Tamilnadu, India. Email: dineshkumarmat@gmail.com. *** Assistant Professor, Department of Mathematics, Srinivasan College of Arts and Science, Perambalur, Tamilnadu, India. Email: vasuki.maths@gmail.com. Abstract- Estrogen therapy is thought to promote gallstone formation and cholecystitis but most data derive from observational studies rather than randomized trials. The aim of the study was to determine the effect of estrogen therapy in healthy postmenopausal women on gallbladder disease outcomes. The second order linear homogeneous differential equation, which was used to determine the effect of estrogen therapy in healthy postmenopausal women on gallbladder disease outcomes. Index Terms- Gallbladder, Estrogen Therapy, Normal Distribution. 2010 Mathematics Subject Classification: 60G12, 60H10 I. INTRODUCTION omen were excluded if they had any illness that suggested less than a year’s survival, had a prior cholecystectomy or gall bladder disease. Women with hysterectomy were eligible for the estrogen alone trial. Eligible participants were randomized to of conjugated equine estrogens (CEE) or placebo. Participants reported hospitalizations for gall bladder diseases and gall bladder related procedures, with events ascertained through medical record review. These data suggest an increase in risk of biliary tract disease among postmenopausal women using estrogen therapy [1] and [10]. In this paper, the model is characterized by the Markov Property of entering and exiting processes, by the service channel and by the system capacity to accommodate one customer at a time [6], [7] and [8]. Here we use the function satisfies the second order linear homogenous differential equation with the initial conditions and , The explicit value of is II. NOTATIONS - Conditional Probability - Generating Probability Functions - Renewal Process - Conditional Density Function - Number of Customers - Interarrival time - Moment - Service Time W