Variable N Overall, N = 7,3911 Amylase cutoff p-value2
<5000, N = 6,3671 >5000, N = 1,0241
Day 7,357 <0.001
>5 3,079 (42%) 2,367 (37%) 712 (70%)
1 877 (12%) 751 (12%) 126 (12%)
3-5 3,401 (46%) 3,215 (51%) 186 (18%)
Unknown 34 34 0
Age 7,391 64.97 (11.46) 65.20 (11.30) 63.51 (12.31) <0.001
Sex 7,391 <0.001
female 3,319 (45%) 2,918 (46%) 401 (39%)
male 4,072 (55%) 3,449 (54%) 623 (61%)
Race 7,391 0.038
Black 548 (7.4%) 483 (7.6%) 65 (6.3%)
Other 343 (4.6%) 285 (4.5%) 58 (5.7%)
Unknown 929 (13%) 781 (12%) 148 (14%)
White 5,571 (75%) 4,818 (76%) 753 (74%)
BMI 7,391 27.24 (6.33) 27.04 (6.18) 28.52 (7.03) <0.001
Fistula 7,355 <0.001
CR-POPF 1,435 (20%) 713 (11%) 722 (71%)
No CR-POPF 5,920 (80%) 5,628 (89%) 292 (29%)
Unknown 36 26 10
ASA Classification 7,391 0.002
5-Moribund 2 (<0.1%) 1 (<0.1%) 1 (<0.1%)
I-II 1,743 (24%) 1,463 (23%) 280 (27%)
III-IV 5,636 (76%) 4,896 (77%) 740 (72%)
None assigned 10 (0.1%) 7 (0.1%) 3 (0.3%)
PAN_DUCTSIZE 7,391 <0.001
<3 mm 1,982 (27%) 1,594 (25%) 388 (38%)
>6 mm 891 (12%) 837 (13%) 54 (5.3%)
3-6 mm 2,912 (39%) 2,565 (40%) 347 (34%)
Unknown 1,606 (22%) 1,371 (22%) 235 (23%)
PAN_GLANDTEXT 7,391 <0.001
Hard 2,332 (32%) 2,224 (35%) 108 (11%)
Intermediate 581 (7.9%) 538 (8.4%) 43 (4.2%)
Soft 2,648 (36%) 2,034 (32%) 614 (60%)
Unknown 1,830 (25%) 1,571 (25%) 259 (25%)

1 Statistics presented: n (%); Mean (SD)

2 Statistical tests performed: chi-square test of independence; Wilcoxon rank-sum test; Fisher's exact test