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Table 2 Basic anthropometric/demographic characteristics of the study subjects

From: Estimated dietary iodine intake as a predictor of placental size: evidence from the ELSPAC study

variable unit mean sd median 5th perc. 95th perc. min max
Iodine intake μg/day 106.6 42.4 101.1 49.2 175.6 6.7 612.5
Family income CZK/month 5490 2490 5000 2600 9000 1500 48,000
Equalized family size person 2.2 0.6 2.1 1.8 3.3 1.0 10.5
Equivalized family income CZK/month 2596 1286 2478 1071 4444 364 26,667
Maternal age y 25.2 4.8 24.6 18.8 34.7 15.2 48.7
Gestational age week 39.7 1.7 39.9 36.7 41.9 23.1 44.6
Birth length cm 50.2 2.3 50.0 46.0 53.0 30.0 59.0
Birth weight g 3290 493 3300 2500 4050 600 5350
Placental weight g 587 164 560 380 860 115 1500
Head circumference cm 34.6 1.4 35.0 32.0 37.0 23.0 43.0
Cephalisation index μm/g 107.2 17.6 104.7 87.7 133.3 60.7 500.0
Ponderal index kg/m3 25.9 2.3 25.8 22.5 29.6 16.3 49.3
Birth weight / Placental weight 5.9 1.6 5.8 3.7 8.9 1.5 17.3
Maternal height cm 166.3 6.0 167.0 157.0 176.0 135.0 189.0
Paternal height cm 179.6 6.8 180.0 169.0 191.0 152.0 204.0
Maternal preconc. weight kg 61.0 9.9 60.0 48.0 80.0 38.0 135.0
Maternal preconc. BMI kg/m2 22.0 3.3 21.5 18.1 28.3 15.1 46.1
Energy intake kJ/day 6558 2157 6272 3563 10,273 2504 19,362
FS Prudent 0.0 1.0 −0.1 −1.4 1.9 −2.1 3.9
FS Carbohydrates 0.0 1.0 −0.1 −1.5 1.8 −3.1 3.5
FS Junk food 0.0 1.0 −0.1 −1.5 1.8 −2.8 3.7