groupware - online collaboration, web-based open source project management

http://www.cyberciti.biz/tips/open-source-project-management-software.html

egroupware

- it is opensource,
is it free? - i guess no more?

how to deploty egroupware - 2004
nice article on issues to be considered, incl. some tech for server


the free hosting possibility - but there cf security issue!!!!!

at siteground.com :____???? 4USD/month
also offers hosting of dotproject

ROC curve comparison, software, statistics etc.

1. SPSS can draw line (also multiple lines for several predictors), can compute SE, 95%CI (nonparametric method), but cannot!!!! compare AUC ROC for two predictors with statistical test, (difference or lack of it can be deduced from overlap of 95%CI for the predictors beng compared, but no formal test, NO p-value!!!!).

2. methods for doing this - comparing AUC ROC of two curves (predictors), Delong 1988, Hanley 1982 ...., permutation/boostrapping CI ...

CF binormal distribution assumption.

SPSS - SE AUC ROC - two methods (options)
1. nonparametric,
2. - bi-negative exponential distribution????

*xxx* cf. Park et al 2004 Korean ..Journal - very nice intro, nonmath, but insightful what has to be done...., includes explanation on PARAMETRIC vs nonPARAMETRIC ROC estimation (smooth vs empirical), cf concept of partial AUC ROC
--- give nice and simple overview on assumptions, and when PARAMETRIC vs NONparametric methods should be used. (continuous, ordinal, skewed, sparse categories etc).


*xxx* more technical-but educational - SUGI .... tutorial on SAS macro that is able to compute p-value for difference between two AUC ROC, explaining different statistical approaches

more technical: SAS help on nonparametric comparison of two ROC curves.

the journal article reference and Rcode for three different methods of calculation of SE of AUC ROC. R forum -- (ref. Hajian-Tilaki, Hanley 2002?

Rcode for the DeLong method of AUC ROC SE estimation - nonparametric


ROCKIT by prof Metz from CHICAGO, free, downloaded, but IMHO will t ake some time to get around, to prepare input file, etc.

cf things with bootstraping, jacknifing etc, nonparametric tests.

- cf childhood predictors of young onset T2DM ... Franks et al. DIABETES 2007 = methods

CF comparison of 8 software packages for performing ROC analysis. (Stephan ClinChem 2003

medcalc by SCHOONJANS - commercial sw for cox hazard, ROC

Jane, Longton, Pepe 2009: Accommodating Covariates in ROC Analysis


ROC EXPLANATION

from Park 2004. cf Lyssenko, Meigs 2008 NEJM

One of the most popular measures is the area under
the ROC curve (AUC) (1, 2). AUC is a combined measure
of sensitivity and specificity. AUC is a measure of the
overall performance of a diagnostic test and is interpreted
as the average value of sensitivity for all possible values of
specificity (1, 2). It can take on any value between 0 and 1,
since both the x and y axes have values ranging from 0 to
1. The closer AUC is to 1, the better the overall diagnostic
performance of the test, and a test with an AUC value of 1
is one that is perfectly accurate (Fig. 2). The practical lower
limit for the AUC of a diagnostic test is 0.5. The line
segment from 0, 0 to 1, 1 has an area of 0.5 (Fig. 2). If we
were to rely on pure chance to distinguish those subjects
with versus those without a particular disease, the resulting
ROC curve would fall along this diagonal line, which is
referred to as the chance diagonal (Fig. 2) (1, 2). A diagnos-

cf values of test from 0.5 (random guess) to 1 (perfect predictor).

Comparison of data analysis packages: R, Matlab, SciPy, Excel, SAS, SPSS, Stata - Brendan O'Connor's Blog

Comparison of data analysis packages: R, Matlab, SciPy, Excel, SAS, SPSS, Stata - Brendan O'Connor's Blog: "Comparison of data analysis packages: R, Matlab, SciPy, Excel, SAS, SPSS, Stata"

Enzmann_Software

Enzmann_Software: "Dirk Enzmann - Statistical Software (Some Useful Things)
Below you find some small executables, SPSS macros, EXCEL-templates, R functions (see: http://www.r-project.org/) and Stata ado-files I wrote for special calculations in statistical analyses. The executable programs are written in Pascal 7.0 and run under Windows (3.x, 9x, NT4, XP). The files can be downloaded and spread without further permisson under the condition that they remain unchanged. They have been tested as virus free. The author is not liable to any damages caused by their use. Comments on improvements are welcome"

Epidemiology and Beyond: stats freeware

Epidemiology and Beyond: "My Favorite Statistic and Math Freeware"

Medrio: EDC Overnight cf Open clinica

Medrio: EDC Overnight: "Medrio provides electronic data capture (EDC) software with unique capabilities: study managers configure Medrio directly without reliance on software programmers. The result is a vast improvement in:
Speed: study online in as little as 1 day
Cost: low monthly subscription per study
Simplicity: automated reports and statistics
Medrio supports phase I-IV trials, outcomes research, registries, retrospective chart reviews, and other clinical and animal health studies where these advantages are most important, all within a secure regulatory compliant environment."

open atrium calendar, features

"Open Atrium allows you to share events and meetings with your team, using the calendar feature. To enable the calendar in your group you have to add the calendar as a feature."

pdf - opena atrium features

Open Workbench - Home

Open Workbench - Home: "Open Workbench is an open source desktop application that provides robust project scheduling and management functionality. Already the scheduling standard for more than 100,000 project managers worldwide, Open Workbench is a free and powerful alternative to Microsoft Project."

Clinical Trial Software | OpenClinica

Clinical Trial Software OpenClinica: "Professional Open Source for Clinical Research.
OpenClinica is clinical trials software for electronic data capture (EDC) and clinical data management (CDM). This website contains official resources and information about OpenClinica."

Clinical Trial Software | OpenClinica - OpenClinica Tutorial Videos

Clinical Trial Software OpenClinica - OpenClinica Tutorial Videos: "OpenClinica Tutorial Videos
The following video tutorials demonstrate installing and using OpenClinica."

The OpenClinica Blog

The OpenClinica Blog: "Musings on open source and open standards in clinical trial software and healthcare IT"

Taskjuggler - The Open Source Project Management Software - Home

Taskjuggler - The Open Source Project Management Software - Home: "TaskJuggler is a modern and powerful, Free and Open Source Software project management tool. Its new approach to project planing and tracking is more flexible and superior to the commonly used Gantt chart editing tools. It has already been successfully used in many projects and scales easily to projects with hundreds of resources and thousands of tasks."

List of open source healthcare software - Wikipedia, the free encyclopedia

List of open source healthcare software - Wikipedia, the free encyclopedia: "List of open source healthcare software"