Table 2

Comparison of groups born in the Royal Maternity and Simpson's Memorial Hospital whose MHT scores were traced with those whose scores were not traced

Variable MHT scores traced
Mean (95% CI)
n2-150 MHT scores not traced
Mean (95% CI)
n Difference in means
(95% CI)
p value2-152
Maternal age (y)27.0 (26.4 to 27.6)44925.7 (25.2 to 26.2)5341.3 (0.5 to 2.0)0.001
Parity2.4 (2.2 to 2.6)4492.05 (1.9 to 2.2)5360.3 (0.09 to 0.6)0.009
Gestation (wk)39.4 (39.1 to 39.7)33939.6 (39.4 to 39.8)4320.2 (−0.5 to 0.2)0.35
Days old3984 (3974 to 3994)4493989 (3980 to 3998)5365 (−17.2 to 8.7)0.52
Birth weight2-151 (g)3317 (3267.5 to 3366.5)4493281 (3239.4 to 3322.6)53636 (−28.1 to 101.3)0.26
Birth length (cm)50.6 (50.3 to 50.9)42850.1 (49.9 to 50.3)5030.5 (0.14 to 0.86)0.007
Placental weight (g)658.8 (632.1 to 685.5)124641.6 (618.1 to 665.1)11317.2 (−28.5 to 43.1)0.69
Umbilical cord length (cm)56.7 (54.6 to 58.8)12154.0 (52.2 to 55.8)1092.7 (0 to 5.5)0.06
Ponderal index (kg/m3)25.6 (25.2 to 26.0)42826.1 (25.8 to 26.4)5030.5 (−0.002 to 1.0)0.07
  • 2-150 Total number of subjects for each variable is not always 449 because of missing data.

  • 2-151 Original data converted to metric: 1 oz = 28 g, 1 inch = 2.5 cm, 1 lb = 453 g.

  • 2-152 Calculated by paired t test on continuous variables.