Table 1 Study population characteristics
From: Blood pressure in young adulthood and residential greenness in the early-life environment of twins
Characteristic | |||
|---|---|---|---|
Maternal | (n = 146) | Adulthood | (n = 278) |
Maternal age, years | 27.4 ± 4.5 | Age, years | 20.9 ± 1.9 |
Socioeconomic status: maternal education | Body mass index, kg/m2 | 21.1 ± 2.8 | |
Low | 59 (40.4) | Smokers, n | 87 (31.3) |
Middle | 32 (21.9) | Physical activity score | 4.73 ± 2.2 |
High | 55 (37.7) | Potassium excretion, mmol/day | 63.2 ± 28.4 |
Neighborhood income, euro | 19,447 ± 4202 | Sodium excretion, mmol/day | 128.1 ± 59.4 |
Smoking during pregnancy | 21 (14.4) | Gamma-Glutamyl Transferase, U/L | 16.6 ± 8.54 |
Zygosity - Chorionicity | |||
Birth | (n = 278) | Dizygotic-Dichorial | 108 (38.8) |
Gestational age, weeks | 37.0 ± 2.4 | Monozygotic-Dichorial | 83 (29.9) |
Neonate birth weight, g | 2524 ± 497 | Monozygotic-Monochorial | 87 (31.3) |
Sex | Complete-pair in final study | ||
Male | 149 (53.6) | One twin | 14 (5.0) |
Female | 129 (46.4) | Both twins | 264 (95.0) |
Twin birth year | 1978 ± 2.0 | Moved since birth | 181 (65.1) |