Fig. 9From: Modeling observations with a detection limit using a truncated normal distribution with censoring90% Confidence Intervals for Difference in Monofocal vs Multifocal Lens at 12 CPD. The horizontal dashed line at δ=−0.15 indicates the non-inferiority margin. DL = detection limit; Tobit = Tobit censored regression with no truncation adjustment; tcensReg = Censored regression with truncation adjustmentBack to article page