Not Signed In -
Software |
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Clinical Trial: Ti PC Software for Analyzing Longitudinal Data
This study has been completed.
Purpose
To develop TI (pronounced 'T-sub-I'), a personal computer program to analyze time-varying data generated by periodic patient reports, repeatedly-observed disease signs, or serial biomarkers to study chronic disease.
| Condition |
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| Cardiovascular Diseases Heart Diseases |
MedlinePlus related topics: Heart Diseases; Heart Diseases--Prevention; Vascular Diseases
Study Type: Observational
Study Design: Natural History
Study start: September 1991; Study completion: April 1996
BACKGROUND: With the advent of quasi-likelihood, generalized estimating equations, and new ways to handle missing data, has come a striking increase in applicable models, perhaps more than after the 1972 introduction of the Cox model for survival data. TI provided a way to analyze the data.
DESIGN NARRATIVE: TIl provided graphics for data exploration and model validation. TI ran under most current version of Windows, used Civilized Software's MLAB as its programming language, offered context-sensitive help, a dictionary of relevant terms, identification of file entries from their screen position, and simple animation. TI permitted the user to analyze time-varying data from the two perspectives of repeated measured using a variety of models and time series where both time and frequency domain tools were provided.
Eligibility
Genders Eligible for Study: Male
Criteria
More Information
Record last reviewed: June 2000
Last Updated: October 13, 2004
Record first received: May 25, 2000
ClinicalTrials.gov Identifier: NCT00005452
Health Authority: United States: Federal Government
ClinicalTrials.gov processed this record on 2005-04-08
Source: ClinicalTrials.gov
Cache Date: April 9, 2005
Resources
- Software (Centers for Disease Control and Prevention)
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