Preterm-at-term | n | Term | n | 95% CI for difference | |
---|---|---|---|---|---|
Birth characteristics | |||||
Gestation at birth (weeks) | 28.9 (2.8) | 22 | 40.2 (1.20) | 39 | N/A |
Birth weight (kg) | 1.26 (0.41) | 22 | 3.40 (0.45) | 39 | N/A |
Gestation at MRI (weeks) | 40.2 (3.10) | 22 | 41.4 (1.40) | 39 | N/A |
Anthropometry at the time of MRI | |||||
Weight at MRI (kg) | 3.01 (2.83–3.19) | 22 | 3.30 (3.17–3.44) | 39 | 0.30 (0.66 to 0.53)* |
Length at MRI (cm) | 47.9 (46.9–48.9) | 22 | 51.3 (50.5–52.1) | 39 | 3.4 (2.1 to 4.7)** |
Head circumference at MRI (cm) | 34.2 (33.6–34.7) | 22 | 35.2 (34.8–35.6) | 39 | 1.1 (0.4 to 1.7)** |
Somatic MRI outcomes | |||||
Total AT (L) | 0.782 (0.735–0.829) | 22 | 0.657 (0.623–692) | 39 | 0.125 (0.064 to 0.186)** |
Total deep subcutaneous AT (L) | 0.033 (0.029–0.036) | 22 | 0.024 (0.021–0.027) | 39 | 0.009 (0.004 to 0.013)** |
Total superficial subcutaneous AT (L) | 0.673 (0.631–0.715) | 22 | 0.568 (0.538–0.599) | 39 | 0.105 (0.051 to 0.159)** |
Total internal AT (L) | 0.076 (0.069–0.083) | 22 | 0.065 (0.060–0.070) | 39 | 0.011 (0.002 to 0.020)* |
Deep subcutaneous adipose abdominal AT (L) | 0.017 (0.014–0.019) | 22 | 0.012 (0.011–0.014) | 39 | 0.004 (0.001 to 0.005)** |
Deep subcutaneous adipose non-abdominal AT (L) | 0.016 (0.014–0.018) | 22 | 0.012 (0.010–0.013) | 39 | 0.004 (0.002 to 0.007)** |
Superficial subcutaneous adipose abdominal AT (L) | 0.133 (0.122–0.145) | 22 | 0.091 (0.083–0.100) | 39 | 0.042 (0.027 to 0.057)** |
Superficial subcutaneous adipose non-abdominal AT (L) | 0.540 (0.506–0.574) | 22 | 0.477 (0.452–0.502) | 39 | 0.063 (0.019 to 0.107)** |
Internal abdominal AT (L) | 0.022 (0.019–0.025) | 22 | 0.018 (0.016–0.021) | 39 | 0.004 (0 to 0.007) |
Internal non abdominal AT (L) | 0.054 (0.049–0.060) | 22 | 0.047 (0.043–0.051) | 39 | 0.008 (0.001 to 0.005)* |
Non-AT mass (kg) | 2.49 (2.45–2.54) | 22 | 2.61 (2.57–2.64) | 39 | 0.12 (0.06 to 0.170)** |
Brain MRI outcomes | |||||
Brain volume (mL) | 481.46 (462.29–498.63) | 19 | 474.02 (456.85–491.20) | 19 | 7.44 (18.53 to 33.40) |
Cerebrospinal fluid volume (mL) | 63.78 (55.06–72.50) | 19 | 31.44 (22.72–40.16) | 19 | 32.34 (19.15 to 45.53)** |
Anterior cerebral artery DF | 1.38 (1.30–1.46) | 20 | 1.25 (1.19–1.32) | 13 | 0.13 (0.03 to 0.23)* |
Middle cerebral artery DF | 1.38 (1.32–1.44) | 20 | 1.26 (1.21–1.31) | 13 | 0.12 (0.04 to 0.19)** |
Posterior cerebral artery DF | 1.46 (1.41–1.50) | 20 | 1.27 (1.24–1.30) | 13 | 0.19 (0.14 to 0.24)** |
Proximal CAVT score | 1.41 (1.36–1.45) | 20 | 1.26 (1.23–1.29) | 13 | 0.14 (0.09 to 0.20)** |
Results are mean (SD) or mean (95% CI).
*p<0.05, **p<0.01.
AT, adipose tissue; CAVT, cerebral arterial vessel tortuosity; DF, distance factor; L, litres; n, sample size.