Figure 4
Scatterplot of the total number of neurofibromas versus number of neurofibromas from paper frames method. Examiner A: the regression line has the intercept α = 65.6 and the slope β = 9.7 (n = 49); Examiner B: the regression line has the intercept α = 38.6 and the slope β = 10.3 (n = 49). There is a statistically significant association (P < 0.0001) between the exact total number of skin neurofibromas and paper frames method for both examiners. Abbreviations: R2 = coefficient of determination.