Table 1:
Participant demographics for n=453 child-mother pairs in the PROGRESS cohort.
| Arithmetic mean (SD) or median [IQR] | N | |
|---|---|---|
| Age, years | 9.6 [9.2, 10.2] | 453 |
| Male, % | 50.1% | 453 |
| Socioeconomic status | 453 | |
| Lower | 52.5% | |
| Medium | 37.5% | |
| Higher | 9.9% | |
| Exposure to secondhand smoke (yes/no) | 28.7% | 453 |
| Preadolescent BMI | 453 | |
| Underweight | 0.4% | |
| Normal Weight | 52.8% | |
| Overweight | 23.8% | |
| Obese | 23.0% | |
| Cystatin C (mg/L) | 0.71 [0.6, 0.8] | 453 |
| BUN (mg/dL) | 12.0 [10.0, 13.7] | 367 |
| Creatinine (Plasma) (mg/dL) | 0.44 (0.08) | 448 |
| Creatinine (Serum) (mg/dL) | 0.43 (0.1) | 368 |
| eGFRSchwartz (Plasma) (mL/min/1.73m2) | 130.8 [115.2, 148.7] | 448 |
| eGFRSchwartz (Serum) (mL/min/1.73m2) | 173.4 [150.4, 204.4] | 368 |
| eGFRCysC2012 (mL/min/1.73m2) | 97.1 [83.4, 111.8] | 453 |
| Prenatal Pb levels: | ||
| Second trimester blood Pb (μg/dL) | 2.9 [2.0, 4.5] | 453 |
| Third trimester blood Pb (μg/dL) | 3.1 [2.0, 4.8] | 375 |
| Cord Blood Pb (μg/dL) | 3.3 [2.1, 5.3] | 362 |
| Tibia Pb | 3.3 [−1.7, 7.8] | 356 |
| Patella Pb | 3.4 [−1.2, 9.0] | 353 |
SD, standard deviation; IQR, interquartile range; BMI, body mass index; BUN, blood urea nitrogen; eGFRCysC2012, estimated glomerular filtration rate from 2012 cystatin C equation.