MJ Glesby, DR Hoover - Annals of internal medicine, 1996 - Am Coll Physicians Unlike patients in a randomized, clinical trial, patients in an observational study choose if and
when to begin treatment. Patients who live longer have more opportunities to select treatment; those
who die earlier may be untreated by ... Cited by 88 - Related articles - BL Direct - All 4 versions
C van Walraven, D Davis, AJ Forster, GA Wells - Journal of clinical …, 2004 - Elsevier We searched Medline databases to identify all observational studies that used a survival analysis in
American Journal of Medicine, Annals of Internal Medicine, Archives of Internal Medicine, British
Medical Journal, Chest, ... Cited by 42 - Related articles - All 11 versions
PCA PhD, MMMPD MA, MD Carl van … - Journal of Evaluation … - interscience.wiley.com Rationale Observational cohort studies are frequently used to measure the impact of therapies on the
time to a particular outcome. Treatment often has a time-variant nature since it is frequently
initiated at varying times during a ... Cited by 13 - Related articles - BL Direct - All 3 versions
JD Lundgren, AN Phillips, C Pedersen, N Clumeck, JM … - JAMA, 1994 - Am Med Assoc OBJECTIVE--To determine the association between elapsed time since starting zidovudine and survival
in patients with acquired immunodeficiency syndrome (AIDS). DESIGN--Inception cohort and
observational study of patients ... Cited by 61 - Related articles - BL Direct - All 5 versions
MH Gail - Annals of Internal Medicine, 1972 - Am Coll Physicians Analysis of survival data from two studies on cardiac transplantation suggests that the assignment
method used favored the transplanted group and that the improved survival in the transplanted group
could be explained solely in terms ... Cited by 47 - Related articles - All 2 versions
A German - Journal of Molecular Medicine, 1994 - Springer Summary. While efficacy of zidovudine (ZDV) in the acquired immunodeficiency syndrome (AIDS) is well
established, the issue of survival after early ZDV treatment is still controversial. To assess
survival benefits of ZDV treatment ... Related articles
- ►annals.org [PDF] MP Sylvestre, E Huszti, JA Hanley - Annals of internal medicine, 2006 - Am Coll Physicians In an article published in Annals of Internal Medicine in 2001, Redelmeier and Singh reported that
Academy Award–winning ac- tors and actresses lived almost 4 years longer than their less suc-
cessful peers. However, the ... Cited by 26 - Related articles - BL Direct - All 5 versions
- ►unc.edu [PDF] LD Fisher, DY Lin - Annual Review of Public Health, 1999 - Annual Reviews ▪ Abstract The Cox proportional-hazards regression model has achieved widespread use in the
analysis of time-to-event data with censoring and covariates. The covariates may change their values
over time. This article discusses ... Cited by 124 - Related articles - BL Direct - All 10 versions
[CITATION] Estimating Cox regression models with PROC PHREG
- ►annals.org NMH Graham, DR Hoover, LP Park, DS … - Annals of internal …, 1996 - Am Coll Physicians Add to CiteULike Add to Complore Add to Connotea Add to Del.icio.us Add to Digg Add to Facebook Add
to Reddit Add to Technorati Add to Twitter What's this? ... Background: Among patients who begin
receiving zidovudine during ... Cited by 34 - Related articles - BL Direct - All 4 versions
