Please refer to the information below for corrections to the NIS data set. In some cases, there is a downloadable document that either provides more information or provides a program to correct the problem.

Contents:

• Correction to SPSS Label Program
• Correction to Instruction on How to Calculate Variances (Standard Errors)
• Trend Weights for 1993-2011 HCUP NIS Data

Correction to SPSS Label Program

Included on the Documentation CD for the 1988-1997 NIS is a program (VLABEL) to label the data elements. This program contains errors and should not be used. Value labels in SPSS can be entered into the data interactively via the data editor or entered and contained in pivot tables.

Correction to Instruction on How to Calculate Variances (Standard Errors)

Click to view the Correction to Instruction on How to Calculate Variances (Standard Errors). (PDF file, 76 KB)

Click to view Trend Weights for 1993-2011 HCUP NIS Data