Life Table Analysis System

Version 2.0.16 was released in October 2008, making the following changes:

• A table that shows the relationship between rate file and outcome file options has been added to the 'Outcome Import File' section of the documentation.

• Corrected upgrade installation to properly restore custom rate files and cause maps.  Custom rate files that were imported before an upgrade to a new version of LTAS.NET did not work properly under the following conditions:

• The custom rate file referenced a custom cause map
  
  
• Two or more custom cause maps were imported prior to the upgrade
  
  
• The custom cause maps were imported in an order other than alphabetical order.

After upgrading, users should re-import any custom rate files they are using.  Even though the problem is now fixed and won't occur as a result of upgrading to this release, re-importing will eliminate the effects of previous upgrades.

• Corrected Personal Cumulative Dose report to show correct person time in diagnosis-based studies for persons having multiple history records.  For diagnosis-based studies, the Personal Cumulative Dose report was incorrectly including time after the date of diagnosis.  This problem was specific to the Person Cumulative Dose report and did not affect any other reports including analysis reports.

• Updated NIOSH-119 rates and cause map

The NIOSH-119 UCOD and Proportion rate files have been updated with rate data for years 2003-2005.  The LTAS.NET state rates have also been updated with the additional years of data.  Additionally, the NIOSH-119 cause map file has changed slightly to correct the mapping for COPD in ICD Revision 8 along with a couple other minor re-mappings affecting Minors 64, 73 and 119. 

• Added support for diagnosis-based (i.e., incidence) studies
  
  
• Changed import validation logic to properly handle diagnosis-based studies.

See the Outcome File Requirements section in the LTAS.NET User's Guide for details.

• For studies using diagnosis based rates, modify Stratify to include diagnosis for non-deceased persons.
  
  
• Added ability to export observed diagnosis for studies that use diagnosis-based rates.
  
  
• Corrected end of risk accumulation logic for diagnosis-based studies

Time at risk should not accumulate past the date of diagnosis for diagnosis-based studies. In addition to correcting the logic, the import wizard was changed to clarify the end of risk options for diagnosis-based studies.

• Fixed problem causing incorrect results in SRR reports when all causes are selected

Selecting all causes for an SRR report caused incorrect results. In many cases, the same results were mistakenly reported for each cause.

• Added support for revisions in non-ICD cause maps

Studies that are based on non-ICD codes can specify either a global revision or specify the revision in the outcome file.

• Corrected inconsistent calculation error when running Major/Minor Summary report. This removed an error message received when running a Major/Minor Summary report or any variant of an SMR List report that included Cause as the row variable.

• MCOD rates are now available for download.  A separate mapping file is needed because these rates are still using the 1960-2002 data.  They will be updated in the future to include the 2003-2005 data. 

Version 2.0.8 was released in February 2008, making the following changes:

• Fixed problem in person-year and event allocation for exposures occurring before follow-up time begins when a lag is also used.
  
  
• Fixed problem with SMR analysis reporting incorrect expected and observed values in some situations.
  
  
• Fixed rounding problem when stratifying Duration categories using Years for units.
  
  
• Fixed errant warnings in Import Exception reports when a global risk begin date is used.
  
  
• Modified 119 Mapping files to fix minor errors.

Version 2.0.1 was released in September 2007, making the following changes:

• For users whose data extend beyond the rates end date (currently 12/31/2004), we added a method to apply rates from last five-year-period to new period of up to five years beyond rates end date, based on user-specified study end date.
  
  
• Fixed problems that prevented TSLE from stratifying correctly when TSFE was not also imported.
  
  
• Analyze Wizard now saves and restores 'All Causes' setting properly.

Version 2.0 was released in August 2007.

Click here if you would like to see the version history for PC-LTAS.

Installation instructions

Rate File Information