Related by context. Frequent words. (Click for all words.) 69 methodological limitations 65 residual confounding 60 methodological flaws 60 Observational studies 57 generalizability 56 randomized controlled trials RCTs 54 correlational 53 meta analyzes 53 postmarketing surveillance 53 underdiagnosis 52 neuropsychiatric symptoms 51 misclassifications 51 neuroimaging studies 51 Epidemiological studies 51 postmenopausal hormone therapy 51 testosterone supplementation 51 pharmacoeconomic 51 statin medications 51 sociodemographic characteristics 50 colorectal neoplasia 50 confounding variables 50 anthropogenic greenhouse gas 50 epidemiologic studies 50 reboxetine 50 RCTs 50 IQWiG 50 beta carotene supplements 50 Cognitive impairment 50 genetic loci 50 fructose intake 49 PPCPs 49 Cochrane Systematic Review 49 alexithymia 49 LDTs 49 Rev. Rul 49 Multivariate analysis 49 nonadherence 49 nutrient intakes 49 serum vitamin D 49 Oxera 49 MERLIN TIMI 49 phthalate exposure 49 carotid stenosis 49 elevated CRP 49 prescription opioid 49 Reschovsky 49 education visit www.mayo.edu 49 poor metabolizers 49 survivorship bias 48 neurologic complications 48 subgroup analyzes 48 InvestorsKeyhole various news 48 observational studies 48 BJOG An 48 iodine intake 48 microbiologic 48 TranSwitch indebtedness 48 somatic mutations 48 bioaccumulation 48 multivariate logistic regression 48 Therein lurks 48 renal toxicity 48 socioeconomic status SES 48 Hertz Picciotto 48 biological plausibility 48 Comparative effectiveness 48 COX 2s 48 inductive reasoning 48 multivariate analyzes 48 PEST analysis 48 noncancer 48 Colorectal cancer screening 48 etiological 48 epidemiological studies 48 menthol smokers 48 pharmacological interventions 48 etiologic 48 El Sohemy 48 CBS SportsLine.com wire 48 serum lipids 48 QT prolongation 48 elasticities 48 cardiovascular disease hypertension 48 immunological responses 48 prognostic indicators 48 skin sterol 47 coxibs 47 methodological 47 PLCO 47 anecdotal observations 47 obj obj = 47 overclassification 47 dietary interventions 47 unproven remedies 47 thorough QT 47 journal Ophthalmology 47 Amita Legaspi GMANews.TV 47 t hese 47 reproductive toxicity 47 thiazide diuretics 47 obstructive coronary artery