Table 3
Depth distribution at the three sites
Site
Preterm
Term
All
Range
Values are mean (SD) expressed in mm.
External
3.61 (0.66)
4.58 (0.81)
4.11 (0.88)
2.3–6.9
Midline
3.53 (0.62)
4.21 (0.69)
3.89 (0.74)
2.1–6.3
Internal
3.58 (0.65)
4.51 (0.74)
4.06 (0.84)
2.2–6.4