Table 2 Demographic details of the term- and preterm-born groups

  GA at birth [in weeks], Mean (SD, range)

40.04 (1.26, 37.00–42.71)

32.79 (3.40, 23.71–36.86)

12.814^a

p < 0.001

  PMA at scan [in weeks], Mean (SD, range)

41.60 (1.67, 37.43–44.86)

40.60 (2.13, 37.00–45.14)

3.615^a

p < 0.001

  PND at scan [in weeks], Mean (SD, range)

1.56 (1.34, 0.00–7.00)

7.81 (4.62, 0.14–19.72)

−9.857^a

p < 0.001

  IMD^e, Mean (SD, range)

13892.19 (7481.54, 614–32731)

17960.02 (7679.92, 3393–31478)

−3.182^a

p < 0.001

  Sex [female count] (%)

149 (45.99%)

26 (39.39%)

0.716^b

p = 0.398

  % FD outliers (S.D.)

5.38 (2.62)

4.52 (2.49)

2.451^a

p = 0.014

  Corrected age at follow-up^a [months], Mean (SD, range)

18.83 (1.30, 17.27–24.33)

18.71 (1.35, 17.47–23.87)

0.672^a

p = 0.503

  Uncorrected age at follow-up^a [months], Mean (SD, range)

18.82 (1.34, 16.97–24.47)

20.40 (1.45, 18.30–24.87)

−7.060^a

p < 0.001

  Bayley III^c - cognitive (S.D.)

101.56 (10.70)

99.90 (13.11)

0.618^a

p = 0.538

  Bayley III^c - motor (S.D.)

102.25 (9.72)

99.65 (10.26)

1.733^a

p = 0.083

  Bayley III^c - language (S.D.)

99.33 (15.72)

95.69 (15.85)

1.155^a

p = 0.249

  Q-CHAT^d (S.D.)

29.90 (8.51)

31.63 (11.81)

−0.682^a

p = 0.497