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Table 1 Maternal and neighborhood characteristics of births occurring in California before and after power plant retirement by area bin around power plants between 2001 and 2011

From: Increase in fertility following coal and oil power plant retirements in California

  1–2 years before retirement 1 year after retirement
  Area bin around power plant Area bin around power plant
Characteristic 0-5 km 5-10 km 10-20 km 0-5 km 5-10 km 10-20 km
N (%) 4329 (15) 8069 (28) 16,581 (57) 4668 (16) 8400 (28) 16,862 (56)
Fertility rate (live births per 1000 women aged 15–44 years per year), median (IQR) 38 (24–63) 32 (28–50) 35 (20–62) 42 (33–74) 35 (30–57) 29 (23–64)
Maternal characteristics       
Percent > 30 years of age, median (IQR) 27 (16–38) 37 (31–84) 38 (31–49) 31 (23–52) 35 (28–54) 40 (20–50)
Percent Hispanic, median (IQR) 50 (26–70) 38 (16–57) 37 (19–48) 58 (28–81) 37 (7–61) 36 (25–46)
Percent non-Hispanic Black, median (IQR) 3.3 (0.1–6.6) 2.6 (0.1–7.5) 3.8
(0.7–10.7)
7.2
(2.3–11.4)
2.3
(0.1–9.1)
3.7
(0.1–12.3)
Percent with high school degree or less, median (IQR) 64 (50–85) 48 (14–68) 44 (31–54) 64 (48–77) 56 (33–87) 42 (33–54)
Neighborhood characteristicsa       
Percent living below federal poverty threshold, median (IQR) 20 (15–26) 13 (7–22) 15 (10–19) 18 (16–23) 14 (8–14) 16 (10–20)
Percent with < high school diploma or equivalent, median (IQR) 19 (12–21) 16 (10–19) 12 (6–14) 18 (13–20) 14 (12–19) 12 (6–14)
Annual foreclosures, median (IQR) 1 (0–7) 3 (0–21) 2 (0–18) 3 (0–5) 6 (0–39) 1 (1–50)
  1. Note. IQR, interquartile range
  2. a Neighborhood characteristics assigned based on mother’s block group of residence at time of birth; poverty and educational attainment from the 2000 US Census and the 2005–2009 American Community Survey; California foreclosure data from CoreLogic (formerly DataQuick)