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. 2018 May 2;17:44. doi: 10.1186/s12940-018-0388-8

Table 2.

Change in the annual fertility rate (live births per 1000 women aged 15–44 years) from 2001 to 2011 in California after 8 coal and oil power plant retirements

Live births,
N (%)
Annual fertility rate
Mean (95% CI)a
Unadjusted Adjustedb
1-2 years
before retirement
1 year
after retirement
1–2 years
before retirement
1 year
after retirement
Area binc
0–5 km 8997 (15.3) 45 (28–61) 53 (36–70) 43 (34–53) 51 (41–61)
5–10 km 16,469 (28.0) 43 (27–58) 45 (29–61) 45 (36–54) 47 (38–56)

a Fertility rate obtained from difference-in-differences negative binomial regression model with robust standard errors

b Estimated at the mean value of covariates: power plant and proportion of births to Hispanic and non-Hispanic black mothers, mothers > 30 years of age, and mothers that attained a high school degree or less, and census block group level poverty (%) and individuals with < high school education (%). Standard errors estimated using the delta method

c 10-20 km area bin served as the comparison population