Table 1 Characteristics of the Study Population (N = 56,141), Southern Israel, 2004–2013
Characteristic | % (Number) / Mean (SD) |
|---|---|
Ethnicity | |
 Jewish | 40% (22,419) |
 Non-Jewish | 60% (33,722) |
Female gender | 49% (27,594) |
SGA | 15.4% (8634) |
tLBW | 3.1% (1716) |
Maternal age (years) | |
  ≤ 20 | 4.7% (2611) |
 20–29 | 50.0% (27,929) |
 30–34 | 26.3% (14,711) |
 35–39 | 14.7% (8206) |
  > 39 | 4.5% (2520) |
Urban | 62.4% (35,24) |
PM2.5 (microgram/m3) | 20.9 (1.6) |
Poverty index (1–20) | 5.6 (4.4) |
Birth weight (g) | 3272 (430) |
Gravidity | 3.9 (2.8) |
Parity | 3.4 (2.4) |