Results 261 to 270 of about 4,330,886 (309)
Some of the next articles are maybe not open access.
Journal of the American Statistical Association, 2002
Studies of time-to-event are often conducted using follow-up sessions with subjects at risk. When these sessions must be widely spaced, their timing can significantly affect the efficiency of a study design. In this article we analyze the optimal timing of follow-up from a Bayesian decision theoretic standpoint.
Inoue L.Y.T., Parmigiani G.
openaire +2 more sources
Studies of time-to-event are often conducted using follow-up sessions with subjects at risk. When these sessions must be widely spaced, their timing can significantly affect the efficiency of a study design. In this article we analyze the optimal timing of follow-up from a Bayesian decision theoretic standpoint.
Inoue L.Y.T., Parmigiani G.
openaire +2 more sources
Incidence, Timing, and Follow-Up of Periventricular Leukomalacia
American Journal of Perinatology, 1995Screening cranial ultrasounds were performed on 115 very low birthweight infants during the first week of life. Fourteen infants (12%) developed changes of periventricular leukomalacia. All 14 weighted 1100 g or less at birth. Eight infants' initial studies were normal, four had intraventricular hemorrhage, and two had periventricular echo densities ...
M C, Goetz +4 more
openaire +2 more sources
A note on quantifying follow-up in studies of failure time
Controlled Clinical Trials, 1996In a recent review of survival analyses published in cancer journals, Altman et al [l] found that about half of the papers did not include any summary of followup time. Only 31% of those papers that did report median follow-up specified the method used to compute it. Independently of Altman et al [I], we have surveyed articles in three medical journals-
M, Schemper, T L, Smith
openaire +2 more sources
Optimal timing of periodic follow-up advertising impulses
Zeitschrift für Operations Research, 1977For well introduced commodities of mass consumption the optimal sequence of follow-up advertising is obtained. We focus on pulse campaign policies under an oligopolistic market structure with several types of consumer responses and compare the results for the associated stochastic reward process.
Manfred R. Wolff +1 more
openaire +2 more sources
On the relevance of the long-time follow-up of the cyclocryotherapy
Der Ophthalmologe, 1999In spite of the availability of cyclocryodestructive laser therapy there still appears to be an indication for cyclocryotherapy in different kinds of glaucoma.Cyclocryotherapy very often appears to be the operation of choice in cases of progressive functional visual loss if a patient is not sufficiently helped with the maximum tolerated medical therapy.
openaire +2 more sources
Drilling time follow-up with non-productive time monitoring
International Journal of Oil, Gas and Coal Technology, 2017Drilling operations are validated whether the objectives of the wells are achieved within a time frame that is faster than the planned drilling time without compromising safety. The drilling costs in general are going to be reduced only if the drilling time is less than the planned program. While developing a field considerable numbers of similar wells
openaire +1 more source
JCV serology in time: 3 years of follow-up
Acta Neurologica Scandinavica, 2016Although many neurologists are reluctant to use natalizumab in MS (multiple sclerosis) given the increased risk for PML (progressive multifocal leukoencephalopathy), trust was regained with the introduction of JCV antibody titres as a potent disease-modifying therapy.
Cambron, M +5 more
openaire +2 more sources
Incorporating Follow-up Time in M-Estimation for Survival Data
Lifetime Data Analysis, 2004It has been approximately 30 years since D.R. Cox introduced the proportional hazards method to model the relationship between covariates and survival time. However, the proportional hazards model has limited value when the proportionality assumption is violated.
openaire +2 more sources
The Cancer Journal, 2007
Guidelines for colonoscopic surveillance after the removal of colorectal polyps already exist in the United Kingdom and United States. However, there is a continuing need to build up an evidence base on the likely effect of different follow-up policies for specific current findings.
Fay H, Cafferty +5 more
openaire +2 more sources
Guidelines for colonoscopic surveillance after the removal of colorectal polyps already exist in the United Kingdom and United States. However, there is a continuing need to build up an evidence base on the likely effect of different follow-up policies for specific current findings.
Fay H, Cafferty +5 more
openaire +2 more sources