. Author manuscript; available in PMC: 2023 Apr 1.

Published in final edited form as: J Epidemiol Community Health. 2021 Oct 4;76(4):398–403. doi: 10.1136/jech-2020-215377

Table 3.

Associations between eviction filing rate of the block group and preterm birth for those <25^th and >75^th percentile for median household income of the block group and restricted to those with public insurance.

	Preterm birth, <37 weeks				Preterm birth, <34 weeks
	Unadjusted		Adjusted^a		Unadjusted		Adjusted^a
	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
Median household income of block group <25^th percentile (<$49,372; n=19,234)
Quartile 1				Reference				Reference
Quartile 2	1.40	1.10, 1.78	1.30	1.03, 1.66	1.40	0.98, 2.01	1.30	0.90, 1.87
Quartile 3	1.45	1.16, 1.82	1.21	0.97, 1.52	1.66	1.18, 2.34	1.34	0.95, 1.90
Quartile 4	2.01	1.63, 2.49	1.31	1.05, 1.63	2.70	1.95, 3.75	1.55	1.10, 2.18
Median household income of block group >75^th percentile (>$109,753; n=19,232)
Quartile 1	Reference				Reference
Quartile 2	1.12	0.97, 1.30	1.09	0.94, 1.27	1.12	0.88, 1.42	1.10	0.86, 1.39
Quartile 3	1.06	0.91, 1.25	1.03	0.89, 1.20	0.79	0.60, 1.04	0.78	0.59, 1.02
Quartile 4	1.22	1.03, 1.45	1.13	0.95, 1.34	0.98	0.75, 1.29	0.91	0.69, 1.20
Restricted to those with public insurance^b (n=20,047)
Quartile 1	Reference				Reference
Quartile 2	1.23	1.01, 1.50	1.17	0.96, 1.42	1.19	0.85, 1.67	1.10	0.79, 1.55
Quartile 3	1.38	1.16, 1.65	1.21	1.01, 1.45	1.63	1.21, 2.18	1.34	0.99, 1.81
Quartile 4	1.75	1.47, 2.08	1.22	1.02, 1.46	2.30	1.73, 3.07	1.39	1.03, 1.88

Abbreviations: OR – odds ratio; CI – confidence interval

Models adjusted for parental age, race/ethnicity, parity, median household income of the block group, and year of delivery (includes a quadratic term)

Median household income of block group for those with public insurance: $56,611 (SD: 30,975); median household income of block group for those with private insurance: $90,313 (SD: 37,505; p<0.01)