Table 1.
Descriptive statistics for the New York women’s birth cohort by baseline parental and childhood characteristics stratified by participation in adult follow-up
Eligible pool |
Non-participants |
Participants |
||||||||
---|---|---|---|---|---|---|---|---|---|---|
n | Mean | SD | n | Mean | SD | n | Mean | SD | P-value | |
Parental characteristics | ||||||||||
Maternal age at enrolment | 841 | 25.80 | 5.98 | 579 | 25.56 | 5.93 | 262 | 26.33 | 6.05 | 0.08 |
Paternal age at enrolment | 732 | 29.73 | 7.81 | 494 | 29.59 | 7.86 | 238 | 30.03 | 7.74 | 0.48 |
Maternal age at menarche | 836 | 12.88 | 1.67 | 574 | 12.85 | 1.73 | 262 | 12.95 | 1.56 | 0.43 |
Maternal pre-pregnant BMI (kg/m2) | 756 | 22.55 | 4.07 | 516 | 22.56 | 4.24 | 240 | 22.53 | 3.68 | 0.93 |
Maternal weight gain (kg) | 776 | 10.48 | 4.87 | 528 | 10.47 | 4.83 | 248 | 10.51 | 4.97 | 0.91 |
Gestation at delivery (weeks) | 841 | 39.29 | 3.00 | 579 | 39.21 | 3.18 | 262 | 39.48 | 2.57 | 0.20 |
Parity at enrolment | 813 | 1.18 | 1.40 | 554 | 1.16 | 1.40 | 259 | 1.22 | 1.41 | 0.54 |
Family SES index (registration) | 787 | 51.34 | 17.34 | 537 | 49.98 | 17.13 | 250 | 54.28 | 17.46 | <0.01 |
Family SES index (age 7) | 812 | 49.72 | 20.24 | 564 | 47.90 | 19.87 | 248 | 53.86 | 20.51 | <0.0001 |
% | % | % | ||||||||
Maternal social security number | ||||||||||
Available | 268 | 31.9 | 156 | 26.9 | 112 | 42.7 | <0.0001 | |||
Not available | 573 | 68.1 | 423 | 73.1 | 150 | 57.3 | ||||
Maternal education (years) | ||||||||||
<12 | 414 | 51.2 | 296 | 53.8 | 118 | 45.6 | <0.01 | |||
12 | 329 | 40.7 | 219 | 39.8 | 110 | 42.5 | ||||
>12 | 66 | 8.2 | 35 | 6.4 | 31 | 12.0 | ||||
Paternal education (years) | ||||||||||
<12 | 325 | 49.6 | 234 | 53.1 | 91 | 42.5 | <0.05 | |||
12 | 248 | 37.9 | 156 | 35.4 | 92 | 43.0 | ||||
>12 | 82 | 12.5 | 51 | 11.6 | 31 | 14.5 | ||||
Marital status | ||||||||||
Single | 52 | 6.2 | 36 | 6.2 | 16 | 6.1 | 0.49 | |||
Married or living as married | 753 | 89.5 | 515 | 89.0 | 238 | 90.8 | ||||
No longer marrieda | 36 | 4.3 | 28 | 4.8 | 8 | 3.1 | ||||
Maternal race | ||||||||||
White | 236 | 28.1 | 137 | 23.7 | 99 | 37.8 | <0.001b | |||
Black | 361 | 42.9 | 259 | 44.7 | 102 | 38.9 | ||||
Puerto Rican | 234 | 27.8 | 173 | 29.9 | 61 | 23.3 | ||||
Other (Asian, other) | 10 | 1.2 | 10 | 1.7 | 0 | 0.0 | ||||
Year of birth | ||||||||||
1959 | 133 | 15.8 | 85 | 14.7 | 48 | 18.3 | 0.02 | |||
1960 | 176 | 20.9 | 137 | 23.7 | 39 | 14.9 | ||||
1961 | 200 | 23.8 | 143 | 24.7 | 57 | 21.8 | ||||
1962 | 218 | 25.9 | 140 | 24.2 | 78 | 29.8 | ||||
1963 | 114 | 13.6 | 74 | 12.8 | 40 | 15.3 | ||||
Maternal breast feeding | ||||||||||
Breast | 2 | 0.3 | 1 | 0.2 | 1 | 0.5 | 0.23 | |||
Bottle | 504 | 81.0 | 356 | 82.6 | 148 | 77.5 | ||||
Both | 116 | 18.7 | 74 | 17.2 | 42 | 22.0 | ||||
Maternal pre-eclampsia | ||||||||||
Yes | 68 | 8.2 | 47 | 8.2 | 21 | 8.1 | 0.99 | |||
Possibly | 85 | 10.2 | 59 | 10.3 | 26 | 10.0 | ||||
No | 680 | 81.6 | 467 | 81.5 | 213 | 81.9 | ||||
Maternal smoking | ||||||||||
Never | 428 | 51.8 | 301 | 53.0 | 127 | 49.2 | 0.32 | |||
Ever | 398 | 48.2 | 267 | 47.0 | 131 | 50.8 | ||||
Childhood anthropometry, birth to age 7 | ||||||||||
Birth | ||||||||||
Placental weight (g) | 711 | 446.98 | 92.10 | 492 | 444.48 | 91.88 | 219 | 452.60 | 92.56 | 0.28 |
Birthweight (g) | 841 | 3126.93 | 488.40 | 579 | 3122.00 | 488.43 | 262 | 3137.81 | 489.09 | 0.66 |
Length at birth (cm) | 831 | 49.94 | 2.36 | 572 | 49.93 | 2.41 | 259 | 49.98 | 2.27 | 0.76 |
4 months | ||||||||||
Weight (g) | 812 | 6138.00 | 776.79 | 553 | 6154.66 | 774.88 | 259 | 6102.40 | 781.15 | 0.37 |
Length (cm) | 815 | 61.55 | 2.80 | 556 | 61.51 | 2.77 | 259 | 61.61 | 2.87 | 0.64 |
1 year | ||||||||||
Weight (kg) | 794 | 9.66 | 1.22 | 539 | 9.69 | 1.27 | 255 | 9.60 | 1.09 | 0.26 |
Height (cm) | 811 | 74.01 | 3.55 | 556 | 74.10 | 3.74 | 255 | 73.81 | 3.07 | 0.24 |
3 years | ||||||||||
Weight (kg) | 448 | 14.91 | 2.14 | 290 | 14.97 | 2.20 | 158 | 14.80 | 2.03 | 0.42 |
Height (cm) | 441 | 94.87 | 3.82 | 284 | 95.01 | 3.85 | 157 | 94.60 | 3.76 | 0.27 |
4 years | ||||||||||
Weight (kg) | 602 | 17.16 | 3.07 | 416 | 17.24 | 3.20 | 186 | 16.96 | 2.76 | 0.27 |
Height (cm) | 602 | 103.24 | 4.35 | 416 | 103.28 | 4.38 | 186 | 103.15 | 4.27 | 0.73 |
7 years | ||||||||||
Weight (kg) | 841 | 24.32 | 5.34 | 579 | 24.53 | 5.51 | 262 | 23.87 | 4.93 | 0.08 |
Height (cm) | 835 | 122.03 | 5.63 | 575 | 122.21 | 5.77 | 260 | 121.64 | 5.28 | 0.18 |
Widowed, divorced, or separated.
P-value for White, Black and Puerto Rican only.