Related by context. Frequent words. (Click for all words.) 72 study 68 epidemiological studies 60 Studies 60 observational studies 59 research 58 randomized trials 57 randomized clinical trials 57 experiments 56 researches 56 randomized controlled trials 55 meta analyzes 54 surveys 53 meta analysis 52 laboratory experiments 52 researchers 51 studied 51 clinical trials 49 longitudinal study 48 Previous studies 48 findings 48 Study 48 RCTs 47 Findings 47 PhD 47 randomized controlled trial 46 randomized clinical 46 multicenter study 45 peer reviewed 45 Experiments 45 observational study 45 Ph.D. 45 tests 45 anthropology 44 doctoral 44 epidemiologic 44 Clinical trials 44 researcher 44 epidemiological 44 doctoral candidate 43 analyzes 43 epidemiology 43 sociology 43 postgraduate studies 43 evaluations 43 analysis 42 clinical trial 42 trials 42 prenatal exposure 42 statistical analyzes 42 doctoral student 42 peer reviewed scientific 42 efficacy 42 peer reviewed journals 42 Phase III trials 42 Phase 2b study 42 statistical analysis 42 dissertation 42 biology 42 studying 42 coauthors 42 empirical 41 doctoral dissertation 41 empirical evidence 41 randomized controlled 41 Ph. D. 41 interventions 41 preclinical studies 41 psychology professor 41 master degree 41 randomized placebo controlled 41 Surveys 41 feasibility studies 40 placebo controlled 40 prospective cohort 40 psychology 40 Research 40 Researches 40 professor 40 Researchers 40 computer simulations 40 Preclinical studies 40 measurements 40 radiocarbon dating 40 master thesis 40 scientists 40 postmenopausal 40 feasibility study 39 doctoral degree 39 multicenter 39 mathematical modeling 39 cultural anthropology 39 pharmacology 39 biostatistics 39 University 39 scientific 39 Phase 2a clinical 39 hypothesis 39 musicology 39 postdoctoral research 39 hypotheses 39 dietary patterns