Number of physician offices and buying groups contacted: 9,260
Number of interviews conducted: 4,627
Completion rate on interviews: 50%
Number of ratings: 5,135
Number of interviews conducted with buying groups: 101
Number of interviews conducted with physician offices: 4,526
Number of suppliers named: 567
Named more than twice: 171
Named once or twice: 396
Average number of suppliers named per interview: 1.1
Source of contacts: 1999 Physicians and Surgeons Directory from infoUSA. Names randomly chosen from a database of 575,000. Lighthouse List Company. Ameritech Yellow Pages.
