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. 2022 Dec 15;20(6):618–628. doi: 10.1089/lrb.2021.0084

Table 4.

Summary of Trigger and Progression by Surveillance Group

  All patients
TM group
BIS group
p
N = 918a
N = 457
N = 461
n (%) n (%) n (%)
Progressed before intervention 39 (4.2) 20 (4.4) 19 (4.1) 0.848
Sample for potential trigger N = 879 N = 437 N = 442  
  Median (IQR) Median (IQR) Median (IQR)  
Follow-up (months)b 32.9 (22.7, 34.3) 32.7 (20.8, 34.3) 33.1 (25.8,34.7) 0.054
  n (%) n (%) n (%)  
Triggered 209 (23.8) 120 (27.5) 89 (20.1) 0.011
  Median (IQR) Median (IQR) Median (IQR)  
Time from randomization to trigger (months) 5.1 (1.3, 15.6) 3.9 (1.0, 11.6) 9.7 (3.6, 18.2) 0.001
  N = 209 N = 120 N = 89  
  n (%) n (%) n (%)  
Progressionc 30 (14.4) 23 (19.2) 7 (7.9) 0.016d
  Median (Min, Max) Median (Min, Max) Median (Min, Max)  
Time from trigger to progression (months) 9.6 (0.7, 31.9) 10.7 (1.4, 31.9) 4.9 (0.7, 15.2) 0.100
a

Sample with any data post-treatment.

b

Months from randomization to last assessment using either tape or BIS.

c

Progression to criteria for being off-study without the interim intervention (subclinical) threshold.

d

Reduction 11.3%; 95% CI, 2.3–20.3; OR = 0.36; 95% CI, 0.11–0.77, p = 0.016, RR = 0.41; 95% CI, 0.13–0.81.

CI, confidence interval; RR, relative risk.