Table 2 Characteristics of participant pregnant women of the Inma–Valencia study, 2004–2006
Characteristics | Subjects (%) |
|---|---|
Maternal age (in years) | |
≤ 29 | 336 (45) |
30–34 | 285 (39) |
≥35 | 119 (16) |
Educational level | |
≤Primary School | 249 (34) |
Secondary School | 314 (42) |
University | 177 (24) |
Country of origin | |
Spain | 651 (88) |
Other countries | 89 (12) |
Socioeconomic status categories | |
I+II, upper | 118 (16) |
III, middle | 178 (24) |
IV+V, lower | 444 (60) |
Pre-pregnancy body mass index (in kg/m2) | |
<25 | 526 (71) |
25.0–29.9 | 139 (19) |
≥ 30 | 75 (10) |
Smoking during pregnancy | |
No | 439 (59) |
First trimester only | 128 (17) |
All pregnancy | 173 (24) |
Alcohol intake | |
None | 518 (70) |
0–1 g/d | 146 (20) |
>1 g/d | 76 (10) |
Gestational weight gain (missing=13) | |
Normal | 261 (36) |
Low | 179 (25) |
High | 287 (39) |
Parity | |
0 | 407 (55) |
≥1 | 333 (45) |
Medical problems in previous pregnancies (missing n=6) | |
Yes | 150 (20) |
Use of supplement containing (any time in pregnancy): | |
Folic acid (missing=32) | 675 (95) |
Vitamin C | 413 (56) |
Vitamin B12 | 645 (87) |