Table 1.
Demographic Variable and Other Covariate Summary Statistics for Clustering Dataset or the Regression Dataset.
| Variable | Clustering Dataset (N = 1092) | Regression Dataset (N = 856) Mean (SD) or Count (%) |
|
|---|---|---|---|
| Mean (SD) or Count (%) |
Count (%) Missing |
||
| Maternal Age | 28.51 (6.04) | 0 (0 %) | 29.01 (5.77) |
| Adjusted Household Income ($) | 61,050 (51256) | 36 (3.3 %) | 63,881 (50924) |
| Pre-pregnancy BMI | 27.66 (7.66) | 10 (0.9 %) | 27.63 (7.50) |
| PSS-4 Total Score | 5.31 (2.86) | 10 (0.9 %) | 5.25 (2.84) |
| Specific Gravity | 1.02 (0.01) | 84 (7.7 %) | 1.02 (0.01) |
| Gestational Age at Urine Collection (w) | 32.02 (2.15) | 88 (8.1 %) | 32.07 (2.14) |
| Study Site: CANDLE Memphis | 735 (67.31 %) | 0 (0 %) | 573 (66.94 %) |
| TIDES San Francisco | 63 (5.77 %) | 56 (6.54 %) | |
| TIDES Minneapolis | 98 (8.97 %) | 86 (10.05 %) | |
| TIDES Rochester | 70 (6.41 %) | 51 (5.96 %) | |
| TIDES Seattle | 35 (3.21 %) | 26 (3.04 %) | |
| GAPPS Seattle | 59 (5.40 %) | 39 (4.56 %) | |
| GAPPS Yakima | 32 (2.93 %) | 25 (2.92 %) | |
| Child Sex: Girls | 550 (50.37 %) | 0 (0 %) | 434 (50.70 %) |
| Parity: Primiparous | 457 (41.85 %) | 7 (0.6 %) | 363 (42.41 %) |
| Maternal Ever Asthma Diagnosis | 151 (13.83 %) | 115 (10.5 %) | 136 (15.89 %) |
| Prenatal Smoking | 99 (9.07 %) | 0 (0 %) | 73 (8.53 %) |
| Ethnicity: Hispanic | 53 (4.85 %) | 3 (0.3 %) | 41 (4.79 %) |
| Race: White | 458 (41.94 %) | 4 (0.4 %) | 393 (45.91 %) |
| Black | 521 (47.71 %) | 374 (43.69 %) | |
| Asian | 18 (1.65 %) | 16 (1.87 %) | |
| Pacific Islander | 0 (0 %) | 0 (0 %) | |
| American Indian | < 5 (<0.46 %) | < 5 (<0.58 %) | |
| Multiple | 72 (6.59 %) | 58 (6.78 %) | |
| Other | 15 (1.37 %) | 11 (1.29 %) | |
| Education: <High School | 39 (3.57 %) | 4 (0.4 %) | 23 (2.69 %) |
| Grad High School | 148 (13.55 %) | 100 (11.68 %) | |
| Tech School | 62 (5.68 %) | 42 (4.91 %) | |
| Some College | 290 (26.56 %) | 216 (25.23 %) | |
| Grad College | 271 (24.82 %) | 233 (27.22 %) | |
| Masters | 207 (18.96 %) | 179 (20.91 %) | |
| Doctorate | 71 (6.50 %) | 63 (7.36 %) | |
| Household Count: 2–3 | 229 (20.97 %) | 9 (0.8 %) | 191 (22.31 %) |
| 4 | 423 (38.74 %) | 344 (40.19 %) | |
| 5 | 251 (22.99 %) | 200 (23.36 %) | |
| ≥ 6 | 180 (16.48 %) | 121 (14.14 %) | |
| Urine Analysis Batch: 1 | 794 (72.71 %) | 83 (7.6 %) | 666 (77.80 %) |
| 2 | 59 (5.40 %) | 54 (6.31 %) | |
| 3 | 156 (14.29 %) | 136 (15.89 %) | |
| Birth Year: 2007 | 43 (3.94 %) | 0 (0 %) | 10 (1.17 %) |
| 2008 | 139 (12.73 %) | 92 (10.75 %) | |
| 2009 | 186 (17.03 %) | 153 (17.87 %) | |
| 2010 | 195 (17.86 %) | 169 (19.74 %) | |
| 2011 | 277 (25.37 %) | 230 (26.87 %) | |
| 2012 | 185 (16.94 %) | 147 (17.17 %) | |
| 2013 | 65 (5.95 %) | 53 (6.19 %) | |
| 2014 | < 5 (<0.46 %) | <5 (<0.46 %) | |