U.S. ambulatory facilities survey. Almost 40 percent of the facilities we surveyed reported treating no Canadians, while an additional 40 percent had seen fewer than ten patients (Exhibit 1Go). Fifteen percent of respondent sites reported treating 10–25 Canadian patients, and only about 5 percent reported seeing more than 25 during the previous year (generally 25–75 patients; none reported more than 100). These findings were fairly consistent across the service categories. The overall response rate was 67 percent, and it varied across type of clinical facility from 56 percent for ambulatory surgery centers to 80 percent for cancer centers.
If we extrapolate these findings (assuming that nonrespondents show a pattern similar to that of respondents), these facilities in the three large metropolitan areas combined saw approximately 640 Canadian patients for diagnostic radiology services such as computed tomography (CT) scans or MRI and 270 patients for eye procedures such as cataract surgery over a one-year period. By comparison, the annual volume for CT scans and cataract extractions averaged about 80,000 and 25,000 procedures, respectively, in British Columbia alone during the mid-1990s.9 In Quebec the annual volume during the same period for CT scans and MRI averaged 375,000 procedures and 44,000 procedures, respectively
Phantoms in the Snow...