Summary of PhD thesis on Medicine: Current status of hearing loss, its related factors and the effectiveness of prevention by supplementing Mg-B6 among the soldiers of armored tank army in 2017-2018

Study objectives: To describe the current status and some factors related to hearing loss among the Armored Army soldiers in 2017; to evaluate the effectiveness of Mg-B6 supplementation in preventing hearing loss among the soldiers of Armored Tank Army in 2018. | MINISTRY OF EDUCATION MINISTRY OF HEALTH AND TRAINING NATIONAL INSTITUTE OF HYGIENE AND EPIDEMIOLOGY NGUYEN TAI DUNG CURRENT STATUS OF HEARING LOSS ITS RELATED FACTORS AND THE EFFECTIVENESS OF PREVENTION BY SUPPLEMENTING Mg-B6 AMONG THE SOLDIERS OF ARMORED TANK ARMY IN 2017-2018 Major Sociological hygiene and Health organization Code SUMMARY OF PhD THESIS ON MEDICINE HANOI - 2021 i THIS THESIS WAS PERFORMED AND COMPLETED AT THE NATIONAL INSTITUTE OF HYGIENE AND EPIDEMIOLOGY Scientific supervisors 1. Prof. Nguyen Tran Hien 2. Dr. Doan Thi Thanh Ha Counter arguer 1 Counter arguer 2 Counter arguer 3 This doctoral thesis will be defended at the Dissertation Committee of Institutional level at National Institute of Hygiene amp Epidemiology on 2022 The doctoral thesis can be found at 1. The National Library 2. The Library of National Institute of Hygiene and Epidemiology ii TABLE OF CONTAIN A. INTRODUCTION . 1 1. The necessity of the thesis . 1 2. Study objectives . 2 3. New contributions of the thesis . 3 4. Value of Thesis. . 4 5. Thesis structure . 4 B. THESIS CONTAIN . 4 Chapter 1. LITERATURE REVIEW . 4 . The concept of hearing loss . 4 . Situation of hearing loss in the military environment . 4 . Factors related to hearing loss . 5 . Measures to prevent hearing loss . 6 Chapter 2. STUDY SUBJECTS AND METHODS . 7 . Study subjects . 7 . Research methods . 8 . Sample size and sample selection method . 8 . Data processing . 10 . Research ethics. 10 Chapter 3. RESULTS. 11 . Current status of hearing loss and some related factors . 11 . The effectiveness of Mg-B6 supplement in prevention of hearing loss . 14 Chapter 4. DISCUSSION . 17 . Current situation of noise hearing loss and related factors among armored tank soldiers in 2017 . 17 iii . The effectiveness of intervention with Mg-B6 supplement for prevention of hearing loss among the soldiers of the Armored Tank Army . 20 . The characteristics of intervention and

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