Table 1.
Demographics and Clinical Variables by Tertile of MSDS
|
Overall (n=8507) |
MSDS Tertile 1 (n=2842) |
MSDS Tertile 2 (n=2644) |
MSDS Tertile 3 (n=3021) |
P value | |
|---|---|---|---|---|---|
| MSDS, median (range) | 25 (22–28) | 21 (19–22) | 25 (24–26) | 28 (27–30) | N/A |
| Maternal age, y | 28 (23–33) | 26 (22–32) | 28 (23–33) | 29 (24–34) | <0.001 |
| Race and ethnicity, n (%) | <0.001 | ||||
| White | 1005 (12) | 495 (17) | 270 (10) | 240 (8) | |
| Black | 4030 (47) | 1328 (48) | 1260 (48) | 1442 (48) | |
| Hispanic | 2423 (28) | 727 (25) | 806 (30) | 890 (29) | |
| Other* | 1049 (12) | 292 (10) | 308 (12) | 449 (15) | |
| Parity before index pregnancy, n (%) | 0.024 | ||||
| Nulliparous | 3675 (43) | 1279 (45) | 1143 (43) | 1253 (42) | |
| Parous | 4832 (57) | 1563 (55) | 1501 (57) | 1786 (58) | |
| Sex of infant, male, n (%) | 4235 (50) | 1403 (49) | 1321 (50) | 1511 (50) | 0.86 |
| Gestational age at delivery, wk | 39 (37–40) | 39 (36–40) | 39 (37–40) | 39 (37–40) | <0.001 |
| Low birth weight, n (%) | 2221 (26) | 859 (30) | 656 (27) | 706 (23) | <0.001 |
| Preeclampsia, n (%) | 848 (10) | 312 (11) | 235 (9) | 301 (10) | 0.038 |
| Prepregnancy obesity, n (%) | 1606 (19) | 607 (21) | 490 (19) | 509 (17) | <0.001 |
| Gestational diabetes, n (%) | 576 (7) | 213 (7) | 161 (6) | 202 (7) | 0.11 |
| Preexisting diabetes, n (%) | 307 (4) | 125 (4) | 96 (4) | 86 (3) | 0.006 |
| Chronic hypertension, n (%) | 442 (5) | 160 (6) | 128 (5) | 154 (5) | 0.41 |
| Ever smoking, n (%) | 1635 (19) | 794 (28) | 460 (17) | 381 (13) | <0.001 |
| Annual income, $, n (%) | <0.001 | ||||
| <30 000 | 3485 (41) | 1054 (37) | 1118 (42) | 1313 (44) | |
| ≥30 000 | 1094 (13) | 296 (10) | 336 (13) | 462 (15) | |
| Missing | 3928 (46) | 1492 (53) | 1190 (45) | 1246 (41) | |
| Education, n (%) | <0.001 | ||||
| College or higher | 2629 (31) | 963 (34) | 840 (32) | 559 (26) | |
| High school | 2957 (35) | 999 (35) | 904 (34) | 732 (34) | |
| Less than high school | 2926 (34) | 880 (31) | 900 (34) | 1145 (38) | |
| Marital status, n (%) | <0.001 | ||||
| Married | 2871 (34) | 720 (25) | 916 (34) | 1235 (41) | |
| Unmarried | 5467 (64) | 2065 (73) | 1683 (64) | 1719 (57) | |
| Unknown | 174 (2) | 57 (2) | 45 (2) | 67 (2) |
For continuous variables, normally distributed continuous variables are reported as means and standard deviations, while nonnormally distributed continuous variables are reported as medians and interquartile ranges. MSDS indicates Mediterranean‐style diet score.
*Asian, Pacific Islander, Cape Verdean, Mixed or Other.