Problem Note 57671: PROC IRT generates an incorrect score when the INMODEL(SCORE) data set contains only one observation
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In the IRT procedure, if an INMODEL(SCORE)= data set has only one observation, the score value saved in the _FACTOR1 variable in the OUT= data set is incorrect.
The problem can be circumvented by adding one or more dummy observations to the INMODEL(SCORE)= data set.
Click the Hot Fix tab in this note to access the hot fix for this issue.
Operating System and Release Information
| Product Family | Product | System | Product Release | SAS Release | ||
| Reported | Fixed* | Reported | Fixed* | |||
| SAS System | SAS/STAT | z/OS | 14.1 | 9.4 TS1M3 | ||
| z/OS 64-bit | 14.1 | 9.4 TS1M3 | ||||
| Microsoft® Windows® for x64 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8 Enterprise 32-bit | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8 Enterprise x64 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8 Pro 32-bit | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8 Pro x64 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8.1 Enterprise 32-bit | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8.1 Enterprise x64 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8.1 Pro | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 8.1 Pro 32-bit | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows 10 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows Server 2008 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows Server 2008 R2 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows Server 2008 for x64 | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows Server 2012 Datacenter | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows Server 2012 R2 Datacenter | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows Server 2012 R2 Std | 14.1 | 9.4 TS1M3 | ||||
| Microsoft Windows Server 2012 Std | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Enterprise 32 bit | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Enterprise x64 | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Home Premium 32 bit | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Home Premium x64 | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Professional 32 bit | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Professional x64 | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Ultimate 32 bit | 14.1 | 9.4 TS1M3 | ||||
| Windows 7 Ultimate x64 | 14.1 | 9.4 TS1M3 | ||||
| 64-bit Enabled AIX | 14.1 | 9.4 TS1M3 | ||||
| 64-bit Enabled Solaris | 14.1 | 9.4 TS1M3 | ||||
| HP-UX IPF | 14.1 | 9.4 TS1M3 | ||||
| Linux for x64 | 14.1 | 9.4 TS1M3 | ||||
| Solaris for x64 | 14.1 | 9.4 TS1M3 | ||||
A fix for this issue for SAS/STAT 14.1 is available at:
https://tshf.sas.com/techsup/download/hotfix/HF2/V34.html#57671
If an INMODEL(SCORE)= data set to PROC IRT contains only a single observation, the score value saved to the OUT= data set is incorrect.
| Type: | Problem Note |
| Priority: | high |
| Topic: | SAS Reference ==> Procedures ==> IRT Analytics ==> Psychometrics |
| Date Modified: | 2017-01-12 14:01:47 |
| Date Created: | 2016-02-16 11:34:00 |