Table 3 Univariate and multivariate results by cox regression (N = 2387)

Cholinesterase

0.74 (0.70, 0.77) < 0.0001

0.80 (0.76, 0.84) < 0.0001

0.83 (0.78, 0.88) < 0.0001

Cholinesterase group

  < 5000 U/L

Ref

Ref

Ref

  ≥ 5000 U/L, < 7000 U/L

0.44 (0.38, 0.51) < 0.0001

0.52 (0.44, 0.60) < 0.0001

0.57 (0.48, 0.68) < 0.0001

  ≥ 7000 U/L

0.31 (0.25, 0.39) < 0.0001

0.46 (0.37, 0.57) < 0.0001

0.55 (0.42, 0.70) < 0.0001

 P for trend

 < 0.0001

 < 0.0001

 < 0.0001