Table 1 Maternal characteristics at enrollment in the total study population and in SIMPLE score subgroups.
Maternal characteristic | Total population (n = 2363) | SIMPLE score < 6 (n = 325) | SIMPLE score ≥ 6 (n = 1934) | p |
|---|---|---|---|---|
Age, years, median (range) | 33.0 (18.0–46.0) | 32.0 (18.0; 45.0) | 33.0 (18.0; 46.0) | <0.01 |
BMI, kg/m2, median (range) | 22.6 (14.7; 49.1) | 22.0 (15.9; 40.2) | 21.7 (14.7; 46.3) | 0.22 |
Obesity, n (%) | 130 (5.6) | 23 (7.2) | 101 (5.3) | 0.16 |
GWG, kg, median (range) | 1.2 (−12.0; 17.0) | 1.0 (−12.0; 9.0) | 1.0 (−11.0; 17.0) | 0.80 |
Ethnicity, non-caucasian, n (%) | 148 (6.3) | 31 (9.5) | 111 (5.7) | <0.01 |
Conception mode, n (%) | ||||
Spontaneous | 2256 (96.7) | 315 (97.2) | 1869 (96.9) | |
ART | 77 (3.3) | 9 (2.8) | 59 (3.1) | 0.78 |
Education, n (%) | ||||
Low | 239 (10.3) | 63 (19.5) | 171 (8.9) | |
Intermediate | 892 (38.3) | 141 (43.7) | 716 (37.2) | |
High | 1198 (51.4) | 119 (36.8) | 1039 (54.0) | <0.01 |
Nulliparous, n (%) | 1353 (58.0) | 183 (56.5) | 1112 (57.7) | 0.69 |
Smoking habit, n (%) | ||||
Ex/never | 2175 (92.2) | 287 (88.6) | 1817 (94.2) | |
Current | 158 (6.8) | 37 (11.4) | 111 (5.8) | <0.01 |
Alcohol consumption | ||||
Yes | 74 (3.5) | 5 (1.7) | 67 (3.8) | 0.06 |
SIMPLE score, median (range) | 7 (1–10) | 5 (1–5) | 8 (6–10) | |
SIMPLE score <6, n (%) | 325 (14.4) |
