st: weighted t-test Fromrosa <rosahh.rosa@gmail.com> Tostatalist@hsphsun2.harvard.edu Subjectst: weighted t-test DateWed, 18 Jan 2012 15:26:16 +0100 Follow-Ups: Re: st: weighted t-test From:Steve Samuels <sjsamuels@gmail.com>...
To statalist@hsphsun2.harvard.edu Subject st: t-test for weighted data Date Wed, 27 Jan 2010 11:53:38 -0500Hi, Suppose I have a data set with four variables from a market research survey: consumer ID, brand (say two brands, A and B), Q19 (responses to question 19 on a 1 - ...
Statistical analysis Two-tailed t tests were used to determine significance at p < 0.05, and logistic regression analyses were performed using Stata 14 (Stata Statistical Software: Release 14; College Station, TX). Results Subjects A total of 98 subjects with a clinical history of cardiorespir...
Data extraction, coding and descriptive analysis were conducted using Stata version 17. The data were weighted using sampling weights before any statistical analysis to make them representative. We employed frequency and percentage distributions to report respondent characteristics and trends. The weighted ...
(C.H.S., with 6 years of experience in performing systematic reviews and meta-analysis) using the “metafor” and “mada” packages in R v.3.4.1 (R Foundation for Statistical Computing, Austria), and the “metandi” and “midas” modules in STATA 15.0 (StataCorp, College Station, USA...
Stata 12.0 was used to pool the sensitivity, specificity, and area under the curve (AUC), as well as publication bias and heterogeneity. Fagan's nomogram was used to predict the post-test probabilities. Results: Eleven studies with 481 malignant and 258 benign lung lesions were included. Most...
zones were considered positive for cancer if cancer was detected on the study biopsy or any prior biopsy. Measures of diagnostic accuracy, along with 95% confidence intervals were calculated. A p < 0.05 was considered significant. Statistical analyses were done with Stata 13.1 (College Station, ...
click here if you have a blog, or here if you don't. ShareTweet If your regression model contains a categorical predictor variable, you commonly test the significance of its categories against a preselected reference category. If all categories have (roughly) the same number of observations, ...
Re: st: Chi2 test on weighted data From: "Dr. Annelies Blom" <blom@survex.de> Re: st: Chi2 test on weighted data From: Steve Samuels <sjsamuels@gmail.com> Prev by Date: Re: st: spmap Next by Date: RE: st: Convert SAS code to STATA Previous by thread: Re: st: Chi2...
(max possible= 0.136 ) Likelihood ratio test= 2.8 on 1 df, p=0.09455 Wald test = 2.15 on 1 df, p=0.1423 Score (logrank) test = 2.75 on 1 df, p=0.09739, Robust = 2.11 p=0.1459 ### # Stata results: coef -.605 se .643 ### . use http://stat.ubc.ca/~e.karim/dataset, ...