From: Does time of surgery influence the rate of false-negative appendectomies? A retrospective observational study of 274 patients
ASA Status
No. of Patients (%)
In Hours (n = 133)
Out of Hours (n = 141)
I
39 (29.3%)
48 (34.0%)
II
23 (17.3%)
20 (14.2%)
III
8 (6.0%)
4 (2.8%)
IV
1 (0.8%)
0 (0.0%)
Not Known
62 (46.6%)
69 (48.9%)