Table 4 Determination of factors predicting negative appendectomy using backward stepwise logistic model
From: Negative appendectomy rate in patients diagnosed with acute appendicitis
Variables | B | SE | Wald | Sig | OR (95% CI) |
|---|---|---|---|---|---|
Age ≤ 40 years old | 0.855 | 0.305 | 2.804 | 0.005 | 2.35 (1.29, 4.28) |
Female | 0.801 | 0.281 | 2.846 | 0.004 | 2.23 (1.28, 3.87) |
Diarrhea | 0.885 | 0.353 | 2.509 | 0.012 | 2.42 (1.21, 4.84) |
Ultrasonography: positive | − 3.201 | 0.862 | − 3.714 | 0.000 | 0.04 (0.01, 0.22) |
Compute tomography: positive | − 2.703 | 1.085 | − 2.491 | 0.012 | 0.07 (0.01, 0.56) |
White blood cell \(\ge\) 10,000 | − 0.947 | 0.381 | − 2.487 | 0.013 | 0.39 (0.18, 0.82) |
Neutrophil \(\ge\) 75% | − 1.269 | 0.288 | − 4.405 | 0.000 | 0.28 (0.16, 0.49) |
Constant | 2.719 | 1.202 | 2.263 | 0.024 |