Evaluating the Impact of Value-Based Purchasing Figure 4. Cross-Sectional Design With Comparison Group (or Static Grou Figure 4. Cross-Sectional Design With Comparison Group (or Static Group Comparison)[D] Select for Text Description.Return to Document Current as of May 2002 Internet Citation: Evaluating the Impact of Value-Based Purchasing: Figure 4. Cross-Sectional Design With Comparison Group (or Static Grou. May 2002. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/quality-resources/value/valuebased/vbpfig4.html