Skip to main content

Advertisement

Table 1 Sociodemographic characteristics of study sample

From: DNA methylation of imprinted genes at birth is associated with child weight status at birth, 1 year, and 3 years

  Newborn 1 year 3 years Complete cases
Birth weight (grams), mean (SD) 3304.2 (540.3) 3279.8 (621.1)
Child BMI (kg), mean (SD)   16.4 (2.1) 16.4 (1.9)
Birth weight for gestational age z score, mean (SD) − 0.09 (1.0) − 0.01 (0.9)
BMI z score, mean (SD) 0.15 (1.3) 0.20 (1.5)
Weight-for-length z score, mean (SD) 0.83 (1.9) 0.78 (1.3)
Race, N (%)
 Black 213 (37) 109 (37.9) 117 (39.4) 66 (39.8)
 White 163 (28.3) 87 (30.2) 84 (28.3) 44 (26.5)
 Other 200 (34.7) 92 (31.9) 96 (32.3) 56 (33.7)
Maternal education, N (%)
 Less than HS 175 (32.1) 86 (30.1) 87 (29.9) 48 (29.1)
 Completed high school 211 (38.7) 104 (36.3) 112 (38.5) 61 (37.0)
 Completed college 159 (29.2) 96 (33.6) 92 (31.6) 56 (33.9)
 Missing 31 2 6 1
Maternal smoking, N (%)
 Yes 91 (17) 41 (14.5) 42 (14.7) 23 (14.2)
 No 445 (83) 242 (85.5) 243 (85.3) 139 (85.8)
 Missing 40 5 12 4
Maternal alcohol consumption, N (%)
 Yes 179 (50.9) 105 (54.4) 98 (51.0) 63 (57.3)
 No 173 (49.1) 88 (45.6) 94 (49.0) 64 (42.7)
 Missing 224 95 104 56
Maternal age, mean (SD) 27.8 (5.8) 28.0 (5.8) 28.1 (5.8) 27.9 (5.6)
Maternal pre-pregnancy BMI, mean (SD) 27.6 (7.2) 27.1 (6.6) 27.4 (6.9) 27.2 (6.6)
Gestational age 38.7 (1.7) 38.5 (2.0) 38.6 (1.9) 38.7 (2.1)
Infant sex, N (%)
 Male 299 (52.1) 149 (51.7) 152 (51.2) 86 (51.8)
 Female 275 (47.9) 139 (48.3) 145 (48.8) 80 (48.2)