Related by context. Frequent words. (Click for all words.) 62 Nutrition Examination Survey NHANES 61 NHANES 59 longitudinal study 58 Longitudinal Study 58 Medical Expenditure Panel 57 National Longitudinal Survey 57 prospective cohort 57 retrospective cohort study 56 Interview Survey 55 Nutrition Examination Survey 54 Human Development NICHD 53 Atherosclerosis Risk 53 National Longitudinal Study 53 Cohort Study 52 Current Population Survey 52 prospective observational 51 Ambulatory Medical 51 End Results SEER 51 Cancer Registry 50 cohort 49 Behavioral Risk 49 sociodemographic 49 longitudinal studies 49 Longitudinal 48 observational study 48 birthweight 48 multicenter study 48 Factor Surveillance 48 nondiabetic 48 folate intake 48 substudy 48 Professionals Follow 48 Surveillance Epidemiology 47 National Comorbidity Survey 47 Adolescent Health 47 anthropometric 47 Perinatal 47 socio demographic 47 cardiorespiratory fitness 47 menarche 46 BRFSS 46 ADNI 46 Framingham Heart 46 Aging NIA 45 Rheumatic Diseases 45 journal Biological Psychiatry 45 placebo controlled clinical 45 serum samples 45 Mental Health NIMH 45 hydroxyvitamin D 45 Epidemiology 44 Transplantation Network 44 Pediatric Academic Societies 44 congenital abnormalities 44 index BMI 44 prenatal exposure 44 premenopausal breast cancer 44 epidemiologic studies 44 American Geriatrics Society 43 Health Sciences NIEHS 43 Prospective Investigation 43 Health Initiative WHI 43 depressive symptoms 43 journal Obesity 43 low birthweight babies 43 randomized controlled trial 43 observational studies 43 Health HSPH 43 ± SD 43 congenital malformations 43 weeks gestation 43 premenopausal 43 randomized clinical 43 covariates 43 neural tube defect 43 potential confounders 43 Kidney Diseases NIDDK 43 cognitively normal 42 NICHD 42 serum concentrations 42 cheek swabs 42 dietary intakes 42 Headache Foundation 42 dietary intake 42 logistic regression 42 multicenter 42 Cardiovascular Risk 42 low birthweight 42 adolescents 42 fasting glucose levels 42 ClinicalTrials.gov 42 comorbidity 42 postmenopausal women 42 cotinine 42 Medicine BUSM 42 gestational 42 longitudinal 42 Arch Intern Med 42 Youth Risk Behavior 42 antenatal clinics 42 Clinical Endocrinology &