Table 1.

Prevalence of factors by small for gestational age, all live births/fetal deaths, St. Louis City and County, 2000–2009 (N = 142,017).

Risk/preventive factors	SGA-no	SGA-yes	Adjusted OR (95% CI)
	(n = 127,157)	(n = 14,860)
	n %	n %
Gestational age (weeks)
≤28	1289 (1.01%)	114 (0.77%)	0.51 (0.42, 0.63)
29–32	2536 (1.99%)	374 (2.52%)	0.93 (0.83, 1.04)
33–36	15364 (12.08%)	2228 (14.99%)	1.07 (1.02, 1.13)
≥37	107968 (84.91%)	12144 (81.72%)	1.00
Maternal age
≤19	12801 (10.07%)	2279 (15.34%)	0.97 (0.91, 1.03)
20–34	94866 (74.61%)	10737 (72.25%)	1.00
≥35	19490 (15.33%)	1844 (12.41%)	1.09 (1.03, 1.16)
Maternal education (years)
<12	17444 (13.72%)	3061 (20.60%)	1.05 (0.99, 1.11)
≥12	109713 (86.28%)	11799 (79.40%)	1.00
Maternal race
White	79123 (62.22%)	6427 (43.25%)	1.00
Black	48034 (37.78%)	8433 (56.75%)	1.96 (1.88, 2.04)
Medicaid (yes)	47405 (37.28%)	7653 (51.50%)	1.13 (1.08, 1.18)
Medicaid (no)	79752 (62.72%)	7207 (48.50%)	1.00
Inadequate prenatal care (yes)	11958 (9.40%)	2279 (15.34%)	1.16 (1.10, 1.23)
Inadequate prenatal care (no)	115199 (90.60%)	12581 (84.66%)	1.00
Inadequate weight gain	15271 (12.01%)	3180 (21.40%)	1.99 (1.91, 2.08)
Adequate weight gain	111886 (87.99%)	11680 (78.60%)	1.00
Parity
Nulliparous	50954 (40.07%)	6871 (46.24%)	1.39 (1.33, 1.45)
Primiparous	38990 (30.66%)	3804 (25.60%)	1.00
Multiparous	37213 (29.27%)	4185 (28.16%)	0.94 (0.90, 0.99)
Smoking (yes)	13023 (10.24%)	2742 (18.45%)	1.92 (1.83, 2.02)
Smoking (no)	114134 (89.76%)	12118 (81.55%)	1.00
Diabetes (yes)	4874 (3.83%)	449 (3.02%)	0.69 (0.62, 0.76)
Diabetes (no)	122283 (96.17%)	14411 (96.98%)	1.00
Chronic hypertension (yes)	1946 (1.53%)	373 (2.51%)	1.38 (1.33, 1.45)
Chronic hypertension (no)	125211 (98.47%)	14487 (97.49%)	1.00
Preeclampsia (yes)	6197 (4.87%)	1715 (11.54%)	2.43 (2.29, 2.58)
Preeclampsia (no)	120960 (95.13%)	13145 (88.46)	1.00