Clinical Prediction Score for Ruptured Appendicitis in ED
Table 1
Clinical characteristics of participants categorized by pathology results as ruptured or nonruptured appendicitis.
Characteristics
Ruptured (+) (n = 77)
Nonruptured (−) (n = 403)
value
AUROC (95% CI)
n
%
n
%
Gender, male
34
44.16
163
40.45
0.613
0.52 (0.46,0.58)
Age>60 years
30
38.96
71
17.62
<0.001
0.61 (0.55,0.66)
RLQ pain
77
100
402
99.75
1.000
0.501 (0.498,0.503)
Migratory pain
42
54.55
240
59.55
0.449
0.48 (0.41,0.53)
Nausea and vomiting
43
55.84
242
60.05
0.528
0.48 (0.41,0.54)
Diarrhea
15
19.48
90
22.33
0.653
0.59 (0.44,0.53)
Anorexia
37
48.05
162
40.20
0.209
0.54 (0.49,0.66)
Fever>37.3°C
55
71.43
195
48.39
<0.001
0.62 (0.59,0.67)
Rebound tenderness
56
72.73
280
69.48
0.684
0.52 (0.46,0.57)
Guarding
48
62.34
103
25.56
<0.001
0.68 (0.63,0.74)
WBC
≤10000
14
18.18
55
13.65
0.531
0.48 (0.42,0.55)
10000–15000
32
41.56
184
45.66
>15000
31
40.26
164
40.69
0.014
0.56 (0.52,0.60)
PMN > 75%
69
89.61
311
77.17
Duration of pain to ER
<12 hours
4
5.19
98
24.32
<0.001
0.65 (0.62,0.70)
12–23 hours
2
2.60
30
15.38
>24 hours
71
92.21
243
60.30
Note. Nonruptured (−) refers to patients without rupture/perforation of appendicitis (inflammation, suppurative, and gangrenous). AUROC, area under the receiver operating characteristic curve; RLQ pain, right lower quadrant pain; WBC, white blood cell count; PMN, polymorphonuclear white blood cell.
