Table 5 Multivariate regression analyses of demographic¹ and CT² data

Age ≥ 50 years

1.67 (0.86–3.24)

Symptoms and signs

Temperature ≥ 37 °C

1.85 (0.90–3.77)

Lack of pain migration

2.06 (1.03–4.13)

Anorexia

1.25 (0.61–2.57)

Laboratory results

Neutrophilia ≥ 82%

2.87 (1.42–5.81)

Alvarado score

0–4

1

5–8

0.83 (0.25–2.77)

9–10

1.90 (0.33–10.95)

Duration of symptom ≥ 24 h

5.84 (2.86–11.96)

CT findings

Appendiceal diameter > 12 mm

1.47 (0.58–3.72)

Tip appendiceal diameter > 10 mm

1.18 (0.46–3.00)

Mucosal enhancement defect

4.62 (1.86–11.51)

Intraluminal appendicolith

1.64 (0.39–6.85)

Appendicolith causing obstruction

0.78 (0.16–3.71)

Fat stranding; moderate–severe

4.41 (1.06–18.29)

Fluid collection

4.45 (0.49–40.74)

Periappendiceal fluid

1.22 (0.47–3.20)

Ascites

1.98 (0.73–5.40)

Small bowel dilatation

1.31 (0.19–8.93)

Small bowel thickening

1.20 (0.45–3.16)