Table 1—

Maternal characteristics, birth size, and adult characteristics of the twins according to sex and zygosity

MZ (n = 250)DZ (n = 173)
Mother’s age at delivery (years)27.2 ± 5.128.1 ± 4.6
Mother’s height (cm)162.7 ± 6.2163.2 ± 6.1
Mother’s prepregancy weight (kg)58.8 ± 9.759.0 ± 9.6
Mother’s prepregancy BMI (kg/m2)22.2 ± 3.422.1 ± 3.3
Gestational age (weeks)36.9 ± 2.537.5 ± 2.4
Men
Women
MZ (n = 232)DZ (n = 156)MZ (n = 257)DZ (n = 155)
Birth weight (g)2,537 ± 4672,684 ± 4812,449 ± 4882,560 ± 474
Adult
 Age (years)25.3 ± 4.626.2 ± 4.825.1 ± 4.626.0 ± 4.7
 Weight (kg)70.4 ± 9.772.0 ± 11.860.7 ± 10.661.2 ± 10.3
 Height (cm)178.1 ± 6.3178.6 ± 6.5165.3 ± 6.2166.2 ± 6.2
 BMI (kg/m2)22.2 ± 2.922.6 ± 3.322.2 ± 3.822.1 ± 3.5
 Fasting glucose (mmol/l)*4.95 ± 1.094.80 ± 1.094.54 ± 1.094.57 ± 1.08
 Fasting proinsulin (pmol/l)*5.49 ± 1.905.28 ± 1.885.28 ± 1.894.87 ± 2.33
 Fasting insulin (pmol/l)*33.1 ± 1.5633.1 ± 1.5737.2 ± 1.5740.0 ± 1.50
 Insulin resistance (HOMA)*1.45 ± 1.591.39 ± 1.561.47 ± 1.581.55 ± 1.51
 β-Cell function (%) (HOMA)*92.3 ± 1.56103.3 ± 1.63146.3 ± 1.65146.8 ± 1.61
  • Data are means ± SD. HOMA, homeostasis model assessment.

  • *

    * Geometric means ± SD.