Linus Pauling Institute Oregon State University Updated in May 2004 by: Jane Higdon, Ph.D
Natto College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates Javaid Nauman Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway Javaid Nauman Postgraduate Institute of Medicine, University of Colombo, Colombo, Sri Lanka Samidi Nirasha Kumari Navaratna Xiamen Cardiovascular Hospital of Xiamen University, Fujian Branch of National Clinical Research Center for Cardiovascular Diseases, Xiamen, China Nawsherwan NA Department of Health Promotion, Zahedan University of Medical Sciences, Zahedan, Iran Athare Nazri-Panjaki Department of Biomedical Engineering, Texas A&M University, College Station, TX, USA Masoud Negahdary Center for Remote Health Technologies & Systems, Texas A&M University, College Station, TX, USA Masoud Negahdary Department of General Surgery, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania Ionut Negoi & Dragos Serban Department of General Surgery, Emergency University Hospital Bucharest, Bucharest, Romania Ionut Negoi Department of Anatomy and Embryology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania Ruxandra Irina Negoi Department of Cardiology, Cardio-Aid, Bucharest, Romania Ruxandra Irina Negoi School of Nursing, University of Gondar, Gondar, Ethiopia Henok Biresaw Netsere T.H
Missed or infrequent periods can be caused by a wide range of factors, from natural life stages to underlying medical conditions and lifestyle choices
For comparisons between two independent groups of measurements of normally distributed data the Students t-test was used
