Aim: This study was aimed to determine the risk factors and at-risk prevalence for smartphone addiction, and also investigate the relationship between smartphone addiction and depression in Necmettin Erbakan University students. Methods: This cross-sectional study was conducted on 509 students who were enrolled in Necmettin Erbakan University, between March 1 and June 15, 2017. Together with the questionnaire form which was prepared by researchers after literature review, Smartphone Addiction Scale-Short Version and Beck Depression Inventory were applied to the participants under supervision. Results: At-risk prevalence for smartphone addiction in the participants was 46.4%. There were statistically significant differences between the at-risk prevalence for smartphone addiction and gender, age, class they attended, daily smartphone use time, to use or not to use social network sites on smartphone, most used social network sites on smartphone, place of residence and most frequently purpose of smartphone usage. Of the participants, 31.4% were at risk for depression. There was a statistically significant positive correlation between the at-risk prevalences for smartphone addiction and depression at a weak level. Conclusion: This study results showed that there are considerable numbers of university students who are at risk for smartphone addiction and depression. For more accurate results about smartphone addiction and depression relationship further clinical researches should be done. Keywords: addiction, depression, mobile phone, students, universities

Objective:The purpose of this study is to investigate the utility of systemic immune inflammation index as a predictor of disease severity in patients with knee osteoarthritis. Methods: 200 patients diagnosed with knee osteoarthritis according to ACR knee osteoarthritis diagnostic criteria were included in the study. Kellgren-Lawrence staging of knee osteoarthritis, Western Ontario and McMaster University Osteoarthritis (WOMAC) index score and systemic immune-inflammation index score were calculated among all participants Results: There were 152 (%76) female and 48 (%24) male participants and median score of age was 63 (54,25-70). 14 (7%) grade 1 gonarthrosis, 64 (32%) grade 2, 72 (36%) grade 3 and 50 (25%) grade 4 gonarthrosis patients were detected. There was no significant correlation between the systemic immune-inflammation index and the radiological stage of gonarthrosis (Kellgren Lawrens Score) (p=0.238). No statistically significant correlation was found between the systemic immune-inflammation index and WOMAC scores (p=0.593). Conclusion: The systemic immune-inflammation index was not found to be correlated with disease severity in knee OA.