Table 2. Univariate and multivariable logistic regression analyses for selecting clinical features of model development.
| Variable | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | |
| Gender | 1.875 (0.931 to 3.778) | 0.079 | ||
| Age (months) | 0.895 (0.73 to 1.098) | 0.288 | ||
| Abdominal pain | 0.588 (0.295 to 1.173) | 0.132 | ||
| Vomit | 2.035 (1.032 to 4.012) | 0.040* | 1.429 (0.582 to 3.508) | 0.436 |
| Paroxysms of crying | 1.428 (0.668 to 3.052) | 0.357 | ||
| Bloody stools | 2.940 (1.49 to 5.801) | 0.002* | 2.291 (1.041 to 5.041) | 0.039* |
| Abdominal mass | 0.425 (0.155 to 1.163) | 0.096 | ||
| Fever | 1.218 (0.364 to 4.073) | 0.749 | ||
| Diarrhoea | 0.362 (0.044 to 2.97) | 0.344 | ||
| Nested position | 6.133 (2.454 to 15.327) | <0.001* | 3.509 (1.131 to 10.883) | 0.030* |
| Air enema pressure | 1.228 (0.785 to 1.922) | 0.368 | ||
| Size (mm) | 1.147 (1.046 to 1.259) | 0.004* | 1.184 (1.062 to 1.319) | 0.002* |
| Enlarged lymph nodes | 1.398 (0.566 to 3.453) | 0.467 | ||
| Abdominal and pelvic effusion | 4.062 (1.871 to 8.823) | <0.001* | 3.171 (1.203 to 8.355) | 0.020* |
| Symptom duration | 2.519 (1.298 to 4.891) | 0.006* | 3.251 (1.498 to 7.056) | 0.003* |
| PLPs | 5.541 (1.72 to 17.857) | 0.004* | 4.031 (1.031 to 15.76) | 0.045* |
*
Represents p<0.05.
PLPs, pathologic lead points.