Table 1.
Recalled body fatness at 10 years old | |||||
---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5+ | |
N | 101 | 191 | 151 | 91 | 63 |
Caucasian, % | 94 | 97 | 97 | 97 | 98 |
Age at urine collection,y | 42.7(4.0) | 42.7(4.0) | 42.8(3.8) | 42.7(3.5) | 44.0(3.4) |
BMI at urine collection, kg/m2 | 23.2 (3.8) | 23.6(3.7) | 25.1(4.9) | 26.9(5.8) | 30.3(6.9) |
Height, m | 1.66(0.06) | 1.65(0.07) | 1.65(0.07) | 1.65(0.07) | 1.67(0.07) |
Parous, % | 81 | 84 | 84 | 83 | 73 |
Age at first birth, y | 26.8(4.2) | 26.6(4.1) | 26.2(4.8) | 26.8(5.0) | 28.1(5.7) |
Physical activity, MET-hr/wk | 22.0(23.3) | 22.2(21.2) | 20.4(16.8) | 23.0(23.7) | 19.9(17.1) |
Alcohol intake, g/day | 4.0(6.9) | 4.0(6.5) | 3.2(4.5) | 4.3(5.8) | 4.8(7.7) |
Caffeine intake, mg/day | 208(180) | 217(194) | 257(226) | 241(174) | 267(205) |
Current smoker, % | 4 | 4 | 9 | 5 | 8 |
Current menstrual cycle length of 26-31 days, % | 59 | 65 | 75 | 66 | 65 |
Current menstrual cycles regular, % | 96 | 96 | 95 | 96 | 95 |
Age at menarche | 13.2(1.4) | 12.8(1.3) | 12.5(1.5) | 11.9(1.3) | 12.1(1.4) |
Regular menstrual cycles within 1 year of menarche, % | 36 | 46 | 46 | 51 | 60 |
Regular menstrual cycles during high school, % | 80 | 90 | 91 | 88 | 95 |
Regular menstrual cycles during ages 18-22, % | 83 | 91 | 92 | 93 | 94 |
Sample collected during ovulatory cycle, % | 95 | 91 | 86 | 88 | 85 |
Sample collected 4-10 days before next period, % | 88 | 84 | 84 | 90 | 83 |
First morning urine sample, % | 78 | 80 | 85 | 75 | 79 |
Creatinine, mg/L | 1021(504) | 1217(608) | 1158(564) | 1076(586) | 1093(691) |
Participants recalled their body fatness at age 10 using a 9-level pictogram; from these reports we created ordinal variables for increasing body fatness as 1, 2, 3, 4, and 5+, with 5+ combining the five highest levels.
Values are means (SD) or percentages.
Numbers do not sum to 603 due to missing values for body fatness.