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Table 1 Sample description

From: Effects of trimester-specific and total gestational weight gain on children’s anthropometrics

Variable Mean ± std or n (percentage) eligible n = 9824 Mean ± std or n (percentage) included in model n = 7313 Mean ± std or n (percentage) excluded from model n = 2511
BMI z-score at 6 y 0.02 ± 1.04 0 ± 1.03 0.07 ± 1.1
Waist circumference in cm at 6 y 52.6 ± 4.5 52.5 ± 4.3 52.8 ± 4.9
Weekly GWG at t1 in kg 0.1 ± 0.3 0.2 ± 0.3 0.1 ± 0.4
Weekly GWG at t2 in kg 0.4 ± 0.2 0.4 ± 0.2 0.4 ± 0.2
Weekly GWG at t3 in kg 0.5 ± 0.2 0.5 ± 0.2 0.5 ± 0.2
Maternal age in years 28.9 ± 5.3 29 ± 5.1 28.7 ± 5.7
Maternal pre-pregnancy BMI in kg/m2 23.4 ± 4.2 23.4 ± 4.2 23.4 ± 4.4
Underweight mothers (BMI < 18.5 kg/m2) 465 (5.1) 343 (4.7) 122 (6.5)
Overweight mothers (BMI > 25 kg/m2) 2377 (25.8) 1869 (25.6) 508 (27)
Obese mothers (BMI > 25 kg/m2) 716 (7.8) 555 (7.6) 161 (8.6)
Breastfeeding, at least one month fulltime 6703 (73.2) 5043 (73.2) 1660 (73)
Smoking, any time during pregnancy 1162 (12) 806 (11) 356 (15.2)
Parental SES “high”/“medium”/“low” 3129 (33.2)/3688 (39.1)/2614 (27.7) 2313 (31.6)/2933 (40.1)/2067 (28.3) 816 (38.5)/755 (35.6)/547 (25.8)