Table 4: Pearson correlation coefficient between physical measurements and total small bowel length.
| Pearson correlation coefficient | p-value | |
| Thickness | ||
| Abdominal wall thickness | 0.25 | 0.07 |
| Circumference | ||
| At xiphoid-sternal angle | 0.34 | 0.0003 |
| At subcostal line | 0.39 | < 0.0001 |
| At umbilicus | 0.33 | 0.0005 |
| At iliac crest | 0.26 | 0.007 |
| At crico-jugular notch | 0.26 | 0.007 |
| Length | ||
| Cricoid to sternal angle | 0.22 | 0.02 |
| Cricoid to xiphoid | 0.35 | 0.0002 |
| Cricoid to umbilicus | 0.29 | 0.002 |
| Cricoid to pubic tubercle | 0.41 | < 0.0001 |