MGH Biostatistics Center

micaParalize is a set of functions that allow a user to easily run normal Matlab functions on a multi-processesor machine by dividing the work-load amongst the serval processors. The program is used for simulations, bootstraps and function maximization problems in biostatistics.

Parallel enabled utilities for use with Mathworks' Distributed Computing Toolbox. A parallel for loop, parallel simulation and a parallel bootstrap that makes use of the DCT to speed up execution.

This application calculates the power or the sample size for the Cox and Logistic models. It is written in MatLab.

depcen.exe is a program for estimating survival probabilities and probabilities of attending visits as described in the paper "Analysis of Failure Time Data with Dependent Interval Censoring" (Finkelstein D.M., Goggins W.B, and Schoenfeld D.A., Biometrics 2002 58:298-304). The program was implemented in Matlab and runs as a batch job from a DOS command prompt. The time to blood shedding data from the paper is also included. "interval_censr_data.zip" contains the data in .dat format and the .sas file required for setup. When using this data, please reference the article cited above.

Gen.m is an m-file (Matlab/Octave) for for computing sequential boundaries, as descibed in the paper "A Simple Algorithm for Designing Group Sequential Clinical Trials" (Schoenfeld, Biometrics 57, 972-974; September 2001). If you have Matlab download gen.m, gen.m can also be run under Octave a public domain m-file interpreter which can be downloaded from the URL below. In addition sequential.zip contains a compiled version of gen.m which runs on the command line.