Figure 5
Correlation analyses of modified intracochlear position index (ICPI)-related metrics and X-ray-based spiral diameter. (a) Using Pearson correlation analyses, the X-ray-based spiral diameter was found to be correlated with ICPI(1) (r = 0.592, P < 0.001), ICPI(2) (r = 0.523, P = 0.002), ICPI(3) (r = 0.486, P = 0.004), and ICPI(4) (r = 0.364, P = 0.04), respectively. (b) Using Spearman correlation analyses, the modified ICPI was found to show much tighter correlation with the spiral diameter on the post-insertion radiograph (r = 0.748, P < 0.001) than did any of each ICPI at four points. The dotted line indicates the 95% confidence interval. CT computed tomography.
