Table 2 Primary and secondary outcomes: cannulation rate, adverse events rate and length of time to create a fistula and time to achieve biliary cannulation in the 3 groups.

From: Efficacy and safety of primary, early and late needle-knife fistulotomy for biliary access

 

Primary NKF

n (%)

Early NKF

n (%)

Late NKF

n (%)

p

Biliary cannulation

Success in first ERCP

118/121 (97.5%)

90/99 (90.9%)

103/110 (93.6%)

0.083

Overall biliary cannulation

121 (100%)

94 (94.9%)

108 (98.2%)

0.115

Adverse events

Overall

5 (4.1%)

7 (7.1%)

12 (10.9%)

0.197

 Pancreatitis

3 (2.5%)

4 (4.0%)

9 (8.2%)

0.190

 Bleeding

2 (21.7%)

3 (3.0%)

3 (2.7%)

0.750

Time to begin NKF, Median (p25-75)

3.6 (1.8–4.0)

10.3 (10.0–16.7)

< 0.001***

NKF duration, Median (p25-75)

4.0 (4.1–7.2)

3.2 (2.5–4.5)

5.6 (3.5–10.5)

< 0.001***

Time to cannulation,Median (p25-75)

4.0 (4.01–7.1)

8.1 (6.6–9.1)

18.5 (13.2–26.8)

< 0.001***

  1. p25-p75: lower and upper limit of the interquartile range.
  2. ***p < 0.01.