Table 1 Characteristics of the study population.
Study participants (n = 1,400) | Dispersion | |||
|---|---|---|---|---|
Number | Percentage | Value | ||
Mothers | ||||
Age (years) (Mean ± SD) | 32.6 | (4.1) | ||
Migration background N (%) | 113 | 8 | ||
Professional qualification | ||||
Lowa N (%) | 93 | 7 | ||
Mediumb N (%) | 597 | 43 | ||
Highc N (%) | 681 | 49 | ||
Employment before delivery | ||||
Not regularly employed N (%) | 33 | 2 | ||
Marginally employed N (%) | 33 | 2 | ||
Part-time employed N (%) | 331 | 24 | ||
Full-time employed N (%) | 852 | 61 | ||
Single parent N (%) | 18 | 1 | ||
Living space* (m2) (median, IQR) | 120 | (90–160) | ||
Household size (number of persons) (median, IQR) | 3 | (3–4) | ||
Infant | ||||
Birth order | ||||
First child N (%) | 892 | 64 | ||
Second child N (%) | 393 | 28 | ||
Third child or higher N (%) | 107 | 8 | ||
Gestational age at birth (weeks, Mean ± SD) | 39,3 | (1,6) | ||
