Related by context. Frequent words. (Click for all words.) 62 NHANES III 61 BRFSS 59 Prostate Cancer Prevention 56 retrospective cohort study 56 sentinel surveillance 55 HIV uninfected 55 seroprevalence 54 prevalences 54 Medical Expenditure Panel 54 Cohort Study 53 National Longitudinal Survey 53 liver transplant recipients 53 Immunization Survey 53 National Comorbidity Survey 53 sociodemographic 53 study 53 prospective cohort 52 Eurobarometer poll 52 untreated tooth decay 52 NHANES 52 Expenditure Survey 52 multivariate analyzes 52 logistic regression analysis 52 Atherosclerosis Risk 52 HbA1C 52 Cardiovascular Risk 52 oropharyngeal cancer 52 Epidemiological studies 52 MetS 51 perinatal mortality 51 HRQOL 51 longitudinal study 51 placebo controlled trials 51 advanced adenomas 51 epidemiologic studies 51 prospectively defined 51 randomly selected sample 50 longitudinal studies 50 HNSCC 50 Interview Survey 50 dietary intakes 50 invasive cervical cancer 50 nonmelanoma skin cancer 50 serum vitamin D 50 SWOG 50 DCCT 50 Longitudinal Study 50 poor metabolizers 50 CALGB 50 vismodegib 50 Youth Risk Behavior 50 Prostate Specific Antigen PSA 50 cotinine levels 50 colorectal cancer CRC 50 randomized controlled clinical 50 JAMA. 49 prospective observational 49 recurrent miscarriage 49 MGUS 49 AIDS Epidemic Update 49 Nationwide Inpatient Sample 49 Observational studies 49 colorectal adenomas 49 biochemical recurrence 49 Interphone study 49 postmenopausal hormone therapy 49 subanalysis 49 Arch Intern Med 49 nondiabetic 49 exhaled nitric oxide 49 placebo controlled clinical trials 49 ALLHAT 49 nonadherence 49 survey 49 Varenicline 49 Health HSPH 48 prevalence 48 folate intake 48 socio demographic 48 Nutrition Examination Survey NHANES 48 T2D 48 IIEF 48 Cancer Registry 48 Alzheimer Disease Cooperative 48 alcoholic liver 48 Household Survey 48 Patient Registry 48 dietary sodium 48 folic acid intake 48 adenotonsillectomy 48 elevated CRP 48 Epidemiological 48 AREDS 48 pneumococcal vaccination 48 surveys 48 antenatal clinics 48 highest quintile 48 digital rectal examination 48 % CI #.#-#.# [003] 48 TRITON TIMI 48 randomly selected households