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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: Soc Sci Med. 2010 Sep 29;71(12):2108–2116. doi: 10.1016/j.socscimed.2010.09.011

Table 4.

Candidate metropolitan level mediating variables for association between segregation and very preterm birth among black women

Murder
 Poverty
 Poverty rate ratio
 Poverty concentration
OR 95% CI OR 95% CI OR 95% CI OR 95% CI
Isolationa 1.12 1.07 1.17 1.15 1.10 1.20 1.15 1.10 1.20 1.16 1.11 1.21
Clusteringa 0.95 0.91 0.98 0.95 0.91 0.99 0.96 0.92 0.99 0.95 0.91 1.00
Murder rateb 1.12 1.03 1.21
Black poverty ratec 1.03 0.98 1.07
Black-white poverty rate ratio 1.00 0.97 1.03
Black poverty concentrationd 0.98 0.96 1.01
σ 2 α 0.120 0.125 0.127 0.122
DIC 410126 413558 413558 406547

NOTE: All models are also adjusted for maternal age, education, parity, marital status, smoking, history of prior preterm birth, chronic hypertension or diabetes, MSA region and MSA population size.

a

Odds ratios for isolation and clustering indices correspond to the change in the outcome for a 1-SD increase in segregation

b

Murder rate is scaled so that a 1-unit change in murder rate is equivalent to 10 murders/100,000 persons

c

Black poverty rate is scaled so that a 1-unit change is equivalent to 10% change in poverty rate

d

Black poverty concentration is the proportion of children in poor families who also live in high poverty neighborhoods. It is scaled so that a 1-unit change is equivalent to 10% change in this proportion.