FIGURE 2. RELATIONSHIP BETWEEN HOSPITAL TSCI ADMISSION VOLUME OR SURGICAL VOLUME AND PARALYSIS IN THE HOSPITAL.
Panels A and B. Hospital TSCI admission volume is defined as the number of patients admitted per year. The adjusted odds of paralysis are presented relative to the lowest-volume institution. Dashed lines represent the 95 percent confidence intervals for the estimated odds ratios. The markers indicating the specific hospital admission volume for the 601 hospitals were used to estimate the curves. Histogram bars indicate proportion of patients admitted relative to center TSCI admission volume. Panel C. Hospital TSCI surgical volume is defined as the number of TSCI surgical procedures performed per year. The adjusted odds of paralysis are presented relative to the lowest-volume institution. Dashed lines represent the 95 percent confidence intervals for the estimated odds ratios. The markers indicating the specific hospital surgical volume for the 601 hospitals were used to estimate the curves. Histogram bars indicate proportion of patients admitted relative to center TSCI surgical volume.