Related by context. Frequent words. (Click for all words.) 61 random sample 59 randomly selected 54 randomly chosen 52 randomly selected sample 52 random sampling 48 survey 47 analyzed 47 surveyed 46 questionnaires 46 subsample 46 surveys 45 Interview Survey 45 prospective cohort 45 METHODS 44 n = 44 serum samples 44 longitudinal study 43 oversample 42 sampled 42 NHANES 42 Nutrition Examination Survey NHANES 42 Conducted 42 Nutrition Examination Survey 42 Factor Surveillance 42 Survey 42 culled 42 demographic characteristics 41 genotyped 41 cognitively normal 41 Zogby Interactive 41 Values Survey 41 study 41 extrapolated 40 Customer Satisfaction Study 40 randomly assigned 40 National Longitudinal Study 40 socio demographic 40 KRC Research 40 conduced 40 demographic variables 40 conducted 39 Questionnaires 39 Longitudinal Study 39 Pulse Survey 39 epidemiologic studies 39 questionnaire 39 Sampling error 39 substudy 39 polled 39 Behavioral Risk 38 Surveys 38 collected 38 Prospective Investigation 38 Satisfaction Study 38 sample 38 GfK Custom Research 38 approximately 38 Ipsos Reid survey 38 Current Population Survey 37 Respondents 37 J Clin Oncol 37 researchers 37 stratified random sample 37 End Results SEER 37 Consumer Finances 37 % CI #.#-#.# [006] 37 Prevalence 37 statistically valid 37 Hispanic whites 37 multicenter study 37 Banks repossessed 37 serological 37 subscales 37 Consumer Confidence Survey 37 respondents 37 differentially expressed 37 compared 37 ± SD 37 randomized 36 Figures compiled 36 Roughly 36 Sample Survey 36 meta analysis 36 collated 36 Tissue samples 36 Trends Survey 36 Retrieved 36 neuropsychological tests 36 prevalence 36 longitudinal 36 roughly 36 households 36 journal Obesity 36 More 36 sampling error margin 36 Altogether 36 Statistical Abstract 35 stratified 35 quartiles 35 Researchers 35 logistic regression