Table 1. Baseline characteristics of the study cohort by pregnancy loss status (n=344).
| Characteristics | Total n=344 |
Pregnancy Loss n=98 |
No Pregnancy Loss n=222 |
Lost To Follow-Up n = 24 |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | n (%) | |
| Age (years): | ||||
| ≤24 | 25 (7) | 5 (5) | 19 (9) | 1 (4) |
| 25-29 | 159 (46) | 43 (44) | 99 (45) | 17 (71) |
| 30-34 | 116 (34) | 31 (32) | 82 (37) | 3 (13) |
| ≥35 | 44 (13) | 19 (19) | 22 (10) | 3 (13)* |
| Mean (±SD) | 29.8 (3.9) | 30.3 (4.1) | 29.6 (3.8) | 29.3 (3.7) |
| Body mass index (kg/m2): | ||||
| Lean/normal (≤24.9) | 170 (49) | 44 (45) | 111 (50) | 15 (63) |
| Overweight (25.0-29.9) | 89 (26) | 23 (24) | 62 (28) | 4 (17) |
| Obese (≥30.0) | 85 (25) | 31 (32) | 49 (22) | 5 (21) |
| Mean (±SD) | 27.0 (6.7) | 27.8 (6.7) | 26.6 (6.6) | 26.9 (7.3) |
| Race/ethnicity | ||||
| Non-Hispanic White | 285 (84) | 82 (85) | 180 (82) | 23 (96) |
| Non-Hispanic Black | 6 (2) | 3 (3) | 3 (1) | 0 (−) |
| Hispanic | 29 (9) | 7 (7) | 21 (10) | 1 (4) |
| Other | 21 (6) | 5 (5) | 16 (7) | 0 (−) |
| Education: | ||||
| ≤High school | 15 (4) | 6 (6) | 9 (4) | 0 (−) |
| College | 325 (96) | 91 (94) | 211 (96) | 23 (100) |
| Income: | ||||
| <$50,000 | 44 (13) | 11 (12) | 30 (14) | 3 (13) |
| $50-99,999 | 163 (49) | 53 (56) | 96 (44) | 14 (58) |
| ≥$100,000 | 128 (38) | 30 (32) | 91 (42) | 7 (29) |
| Employed: | ||||
| No | 70 (20) | 22 (22) | 44 (20) | 4 (17) |
| Yes | 274 (80) | 76 (78) | 178 (80) | 20 (83) |
| Has health insurance: | ||||
| No | 15 (4) | 6 (6) | 6 (3) | 3 (13) |
| Yes | 326 (96) | 91 (94) | 214 (97) | 21 (88) |
| Research site: | ||||
| Michigan | 65 (19) | 18 (18) | 42 (19) | 5 (21) |
| Texas | 279 (81) | 80 (82) | 180 (81) | 19 (79) |
| Prior miscarriage: | ||||
| No, nulligravid | 133 (39) | 37 (38) | 86 (39) | 10 (42) |
| No, gravid | 141 (41) | 36 (37) | 93 (42) | 12 (50) |
| Yes | 68 (20) | 24 (25) | 42 (19) | 2 (8) |
| Cigarette smoking during pregnancy: |
||||
| No | 301 (89) | 83 (87) | 198 (89) | 20 (95) |
| Yes | 38 (11) | 13 (14) | 24 (11) | 1 (5) |
| Alcohol consumption during pregnancy: |
||||
| No | 157 (46) | 49 (51) | 99 (45) | 9 (43) |
| Yes | 182 (54) | 47 (49) | 123 (55) | 12 (57) |
*
p=0.03 for 3-way comparison
SD, standard deviation