| Update Notes
This page lists the changes that have been made to
PASS since March 16, 2007.
January 14, 2010
PASS 2008 updated to correct a problem with the Hotelling's T2
procedure. When solving for N or N1, the power input was being
interpreted as beta and vice versa.
November 3, 2009
PASS 2008 updated to correct a problem with the One Sample
Proportions Test. A "subscript out of range" error was fixed.
September 14, 2009
PASS 2008 updated to correct a problem with the Inequality Tests for
Two Correlated Proportions in a Matched Case-Control Design routine.
Some of the calculation results were not being displayed.
August 18, 2009
PASS 2008 updated to correct a problem with Equivalence Tests for
Two Means in a Higher-Order Cross-Over Design using Ratios. The
procedure was not displaying the correct value for RU when entering 1/RL
for RU. The power calculations were not affected.
November 6,
2008
PASS 2008 updated to correct minor issues. Clarification was made in the Lakatos survival routines for the Proportion Lost or Switching Groups
parameters.
August 5, 2008
PASS 2008 updated to correct a problem in the Poisson Regression
routine when a Normal distribution with variance unequal to 1 is used
for the distribution of X1. The power was being underestimated.
May 13, 2008
PASS 2008 updated to fix inconsistencies in the two-sample t-test
input window power specification box.
January 14, 2008
PASS 2008 updated to fix the Chi-Square Effect Size Estimator. Some
important boxes were hidden from view.
January 4, 2008
This release represents the final release of PASS 2008. The update adds
the following new procedures to PASS 2008:
1.
Mixed
Models
2.
Randomization
Lists
3.
Kappa Test for
Agreement Between Two Raters
4.
Confidence
Intervals - Means (6 Procedures)
5.
Confidence
Intervals - Proportions (2 Procedures)
6.
Confidence
Intervals - Regression Slope
7.
Confidence
Intervals - SD/Variance (8 Procedures)
8.
Confidence
Intervals - Correlation
9.
Cochran-Armitage Proportion Trend Tests
10.
Normality
Tests
11. Design of
Experiments (9 Procedures)
User's who have already purchased a license to PASS 2008 should
download
and install the update to add the new procedures. There is no additional
charge to add these new procedures if you already own a PASS 2008 license. Your current
PASS 2008 serial number will automatically unlock these new procedures after
you install the update.
December 7, 2007
PASS 2008 updated to fix a problem with the Multiple Comparison
(Simulation) routines. The program was interpreting power (and beta)
inputs incorrectly.
November 2, 2007
PASS 2008 updated to fix a few typographical errors in the menus.
October 24, 2007
Release of
PASS 2008 and NCSS 2007/GESS 2006 (Version 1). These new versions
separate NCSS/GESS and PASS into two programs that operate independently
of one another. These new versions of NCSS and PASS allow the user to
function in a limited user (XP) and standard user (Vista) environment
without problems. The Settings, Data, Junk, Report, and Macros folders
have been moved to your 'My Documents' folder into a subdirectory named
'NCSS'.
Both NCSS 2007 (Version 1) and PASS 2008 are fully
compatible with Windows Vista. PASS 2008
adds several new procedures and features to PASS, including new survival
analysis tools, microarray gene expression comparison tools, an enhanced
user interface, an improved PDF help system, and the ability to create
macros, which add programmability and streamline repeated tasks.
PASS 2008 has been released before all
procedures have been added so that users can immediately begin taking
advantage of the new features offered by PASS 2008. Purchasers of PASS
2008 will receive many additional procedures as they become available
during 2008 at no additional cost.
All templates from previous versions of
PASS are fully compatible with PASS 2008.
The upgrade also includes an improved help system that
consolidates the PDF documentation and the Help System. Adobe®
Reader®
Version 7 or later is required to use the new PASS Help System. You can download the latest version of Adobe®
Reader®
by clicking on the link below. The new help system is fully compatible
with Windows Vista.
July 19, 2007
PASS 2005 updated.
Incorrect starting values were computed for the Holladay model in the
curve fitting routine. Inconsistencies were found in sample sizes for
nonparametric tests (Wilcoxon & Mann-Whitney) in PASS. Syntax errors in
user-written macros were causing the program to terminate. Mixed Models
variance component estimates were incorrect in some models with large
numbers of repeated measures.
June 25, 2007
PASS 2005 updated.
The PASS Confidence Interval for One Proportion procedure was giving
incorrect results for some sample sizes due to internal rounding error.
March 16, 2007
PASS 2005 updated.
Help file compatibility issue with Windows Vista fixed. You can now
download a Windows Vista update from Microsoft to allow you to view
the help file.
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