Introduction and aim: Nonadherence to medications is a common factor that prevents patients from achieving the full therapeutic benefit of their therapies. In the mid- 1980s, Morisky and colleagues developed a brief questionnaire to aid practitioners in prospectively predicting adherence with antihypertensive medications. Subsequently, the instrument was validated in a number of studies and demonstrated to have good psychometric properties. Independent researchers have further expanded the application of this instrument to other chronic diseases and they noted several potential deficiencies.After all,two new questions were added to create the Modified Morisky Scale. The aim of this study is to translate and validate the Modified Morisky Scale to Turkish.

Method: Modified Morisky Scale was translatedinto Turkish versionindividually by three researchers, and it’s determined that Modified Morisky Scale’s Turkish translation of second question was not understood properly. So we changed the second question from negative to positive. The Turkish textwas translated into English by a professional translator. There were no difference between the translated version and the original one. The final version of theTurkish Modified Morisky Scale consisting of six questions was emerged in thirty five sequential patients with chronic illnesses, who were applied to Kocaeli University Değirmendere Family Medicine Polyclinics. The patients were using medicines at least six months and they were executed the scale as pretest/ posttest with one week interval.

Results: 23 women, 12 men participants’ ages means were 61,91(=SD 9,75). Between pretest and posttest there were statistically no significant difference. (p>0,05)

Discussion and Conclusion: Turkish Modified Morisky Scale is short, easy, practical, which can appraise individually motivation and level of the knowledge and confidential test. It’s concluded that it would be useful to assess adherence to long term pharmacological treatment of chronic illnesses in primary care.