Base for pharmacoepidemiology. Br J Clin Pharmacol 1998, 45(5):419?25. Jick H, Jick SS, Derby LE: Validation of details recorded on common practitioner based computerised information resource in the Uk. BMJ 1991, 302(6779):766?68. van Staa TP, Abenhaim L, Leufkens H: A study on the effects of exposure misclassification as a result of the time-window design in pharmacoepidemiologic research. J Clin Epidemiol 1994, 47(2):183?89. World Wellness Organisation: In regards to the ATC/DDD method. In 2008. Obtainable at: whocc.no/atc_ddd_methodology/purpose_of_the_atc_ddd_system/. Accessed July 01 2013. Patterson SMHC, Kerse N, Cardwell CR, Bradley MC: Interventions to improve the acceptable use of polypharmacy for older folks. Cochrane Database Syst Rev 2012, 16(five):CD008165. doi:10.1002/14651858.CD008165.pub2. Charlson ME, Pompei P, Ales KL, MacKenzie CR: A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chronic Dis 1987, 40(5):373?83. de Groot V, Beckerman H, Lankhorst GJ, Bouter LM: Tips on how to measure comorbidity:a vital evaluation of accessible approaches. J Clin Epidemiol 2003, 56(three):221?29. Khan NF, Perera R, Harper S, Rose PW: Adaptation and validation of the Charlson Index for Read/OXMIS coded databases. BMC Fam Pract 2010, 11:1. Berger JS, Roncaglioni MC, Avanzini F, Pangrazzi I, Tognoni G, Brown DL: Aspirin for the major prevention of Caspase 10 Inhibitor Storage & Stability cardiovascular events in girls and men: a sex-specific meta-analysis of randomized controlled trials. JAMA 2006, 295(three):306?13. Ridker PM, Cook NR, Lee IM, Gordon D, Gaziano JM, Manson JE, Hennekens CH, Buring JE: A randomized trial of low-dose aspirin in the main prevention of cardiovascular illness in girls. N Engl J Med 2005, 352(13):1293?304. Hughes JD, Tanpurekul W, Keen NC, Ee HC: Minimizing the cost of proton pump inhibitors by adopting very best practice. Qual Prim Care 2009, 17(1):15?1. Molloy D, Molloy A, O’Loughlin C, Falconer M, Hennessy M: Inappropriate use of proton pump inhibitors. Ir J Med Sci 2010, 179(1):73?5. Batuwitage BT, Kingham JG, Morgan NE, Bartlett RL: Inappropriate prescribing of proton pump inhibitors in principal care. Postgrad Med J 2007, 83(975):66?8.31. Zhan C, Sangl J, Bierman AS, Miller MR, Friedman B, Wickizer SW, Meyer GS: Potentially inappropriate medication use within the community-dwelling elderly: findings in the 1996 Medical Expenditure Panel Survey. JAMA 2001, 286(22):2823?829. 32. Aparasu RR, Mort JR: Prevalence, correlates, and associated outcomes of potentially inappropriate psychotropic use inside the community-dwelling elderly. Am J Geriatr Pharmacother 2004, two(two):102?11. 33. Spore DL, Mor V, Larrat P, Hawes C, Hiris J: Inappropriate drug prescriptions for elderly residents of board and care facilities. Am J Public Wellness 1997, 87(three):404?09. 34. Aparasu RR, Sitzman SJ: Inappropriate prescribing for elderly outpatients. Am J Overall health Syst Pharm 1999, 56(5):433?39. 35. Piecoro LT, Browning SR, Prince TS, Ranz TT, Scutchfield FD: A database analysis of potentially inappropriate drug use in an elderly medicaid population. Pharmacotherapy 2000, 20(2):221?28. 36. Pugh MJ, Hanlon JT, Zeber JE, Bierman A, Cornell J, Berlowitz DR: Assessing potentially inappropriate prescribing in the elderly Veterans Affairs CB1 Modulator medchemexpress population utilizing the HEDIS 2006 high quality measure. J Manag Care Pharm 2006, 12(7):537?45. 37. Balogun SAP M, Evans J: Correlates of potentially inappropriate medication use amongst newly admitted nursing household sufferers. J Am Geriatr Soc 2003.