| 
      TI, tolerance interval; TOF, train-of-four.
        |  | Chinese (n=114) | Caucasian (n=36) | Estimated    difference (95%CI) | P-value |  
        | TOF 0.7 |  |  |  |  |  
        | Geometric mean (95% CI) | 1.6 (1.5 to 1.8) | 1.1 (1.0 to 1.2) |  | p<0.0001 |  
        | Median | 1.6 | 1.1 | 0.5 (0.2, 0.7) |  |  
        | Range | 0.6 to 9.3 | 0.6 to 2.8 |  |  |  
        | Upper limit of TI | 4.3 | 2.2 |  |  |  
        | TOF 0.8 |  |  |  |  |  
        | Geometric mean (95% CI) | 1.9 (1.7 to 2.1) | 1.2 (1.1 to 1.3) |  | p<0.0001 |  
        | Median | 1.8 | 1.2 | 0.7 (0.4, 1.0) |  |  
        | Range | 0.6 to 10.1 | 0.6 to 3.0 |  |  |  
        | Upper limit of TI | 5.0 | 2.4 |  |  |  
        | TOF 0.9 |  |  |  |  |  
        | Geometric mean (95% CI) | 2.3 (2.1 to 2.6) | 1.4 (1.3 to 1.6) |  | p<0.0001 |  
        | Median | 2.3 | 1.4 | (0.5, 1.2) |  |  
        | Range | 0.6 to 14.6 | 0.6 to 3.3 |  |  |  
        | Upper limit of TI | 6.4 | 3.2 |  |  |  Estimated difference and 95% CI were obtained according to Hodges-Lehmann 
      and Moses.
 p-values obtained from testing whether the ratio of the two geometric means is 
    equal to 1 (ANOVA on log- transformed recovery times)
 |