Table 4.

Multivariate Associations Between Duration of Residence in U.S. and Birthweight, ECLS-K

	All Immigrants (N = 1850)		Hispanic Immigrants (N = 940)
	Birthweight (OLS coeff.)	Low Birthweight (Odds ratio)	Birthweight (OLS coeff.)	Low Birthweight (Odds ratio)
Years in U.S.
0–2	−108.24**	3.43***	−80.64	3.32*
6–10	−62.34	2.23*	−52.94	2.36
11–15	−59.71	2.12*	−99.33	4.07**
16–20	−166.84**	5.30***	−218.80**	8.49***
21+	−50.66	2.82**	−76.06	2.08
Age (years)
< 20	−215.28***	1.14	−194.01***	0.70
35+	78.13	0.99	45.19	1.05
Race/ethnicity
Non-Hispanic black	−253.74***	1.28	NA	NA
Hispanic	−119.52**	0.99	NA	NA
Other	−258.13***	2.41**	NA	NA
Married	91.37**	0.60**	74.94*	0.52**
Parity	NA	NA	NA	NA
Education
< High school	111.07*	1.31	158.40*	0.77
High school	14.04	1.17	41.75	0.74
Some college but not graduate	36.94	1.22	105.90	0.44
Annual household income ($)
0–10,000	15.28	1.06	100.37	0.36
10,001–20,000	4.41	1.43	78.20	0.63
20,001–30,000	−85.20	2.41**	−17.56	1.34
30,001–40,000	−32.18	2.22*	102.38	1.14
40,001–50,000	−136.59	3.13**	−134.88	2.57
50,001–75,000	−56.22	1.63	−37.26	1.18
Constant	3451.97	NA	3257.04	NA

Notes: Based on weighted data. Sample sizes rounded as required by NCES to protect subject confidentiality.

^*p<0.1,

^**p<0.05,

^***p<0.01