Table 1 Socio-demographic and lifestyle characteristics of participants in the PrOMIS cohort
Variable | Mean ± SDa or n (%)b |
|---|---|
Gestational age at recruitment | 10.9 ± 3.3 weeks |
Maternal age | 28.0 ± 6.2 years |
Age category | |
18–20 | 129 (5.0 %) |
20–29 | 1488 (57.1 %) |
30–34 | 544 (20.9 %) |
≥ 35 | 444 (17.0 %) |
Ethnicity | |
Mestizo (Mixed race ancestry) | 1980 (76.1 %) |
Other | 621 (23.9 %) |
Marital status | |
Married or living with partner | 2095 (80.7 %) |
Other | 500 (19.3 %) |
Parity | |
Nulliparous | 1316 (50.7 %) |
Multiparous | 1282 (49.4 %) |
Education level (years of education) | |
≤ 6 | 101 (3.9 %) |
7–12 | 1394 (53.7 %) |
> 12 | 1103 (42.4 %) |
Employment status | |
Employed | 1200 (46.1 %) |
Not employed | 1404 (53.9 %) |
This pregnancy was planned | |
Planned | 1097 (42.3 %) |
Not planned | 1498 (57.7 %) |
Smoked before this pregnancy | |
Yes | 543 (20.9 %) |
No | 2055 (79.0 %) |
Currently smoking in this pregnancy | |
Yes | 101 (3.9 %) |
No | 2495 (96.1 %) |