دوريات أكاديمية 26

sleep 7 psychometrics 5 surveys and questionnaires 5 africa 4 confirmatory factor analysis 3 ethiopia 3 exploratory factor analysis 3 factor analysis 3 insomnia 3 severity of illness index 3 anxiety 2 body mass index 2 catha edulis 2 دراسات مقارنة 2 تشخيص 2 dimensionality 2 evaluation research 2 fasting 2 headache 2 الصحة 2 medical cooperation 2 medical education 2 medical students 2 model fit 2 pss 2 reaction time 2 البحوث 2 research evaluation 2 مناهج البحث العلمي 2 sleep initiation and maintenance disorders 2 ضغط عصبى 2 student 2 الطلاب 2 students, medical 2 تعاطي المخدرات 2 systematic review 2 university students 2 academic performance 1 addiction 1 alcohol 1 anxiety disorders 1 approximation error 1 asthma 1 behavior, addictive 1 black people 1 categories (mathematics) 1 catha 1 circadian rhythms 1 coefficients (statistics) 1 طلاب الجامعة 1

الإنجليزية 26

health and quality of life outcomes 7 bmc medical education 4 health & quality of life outcomes 4  بي إم سي الصحة العامة 3 bmc psychiatry 2 critical care 2 respiratory research 2 behavioral & brain functions 1 behavioral and brain functions bbf 1

فهرس مكمل 13 MEDLINE 9 Springer Nature Journals 4

ethiopia 8 المملكة العربية السعودية 2