Selected Factors by Birthweight of Infant
Boone County Resident Births, 1989 - 1998

Factor	Very Low Birthweight < 1,500 grams		Low Birthweight 1,500 - 2,499 grams		Normal Birthweight 2,500+ grams		Unknown Birthweight		Total
	Number	Percent	Number	Percent	Number	Percent	Number	Percent	Number	Percent
Total Births	48	1.5	223	6.9	2,946	91.6	0	0.0	3,217	100.0
Maternal Age
< 20 Years	10	1.4	53	7.5	643	91.1	0	0.0	706	100.0
< 15 Years	0	0.0	1	10.0	9	90.0	0	0.0	10	100.0
Maternal Race
White	47	1.5	220	6.9	2,932	91.7	0	0.0	3,199	100.0
Black	1	5.9	3	17.6	13	76.5	0	0.0	17	100.0
Other	0	0.0	0	0.0	1	100.0	0	0.0	1	100.0
Births With Known Prenatal Care
First Trimester	20	0.9	125	5.9	1,970	93.1	0	0.0	2,115	100.0
Second Trimester	13	1.7	55	7.4	677	90.9	0	0.0	745	100.0
Third Trimester	1	1.1	8	9.0	80	89.9	0	0.0	89	100.0
No Prenatal Care	1	4.3	8	34.8	14	60.9	0	0.0	23	100.0
Gestational Age
< 37 Weeks	40	11.0	122	33.4	203	55.6	0	0.0	365	100.0
37+ Weeks	0	0.0	83	3.1	2,596	96.9	0	0.0	2,679	100.0
Unknown	8	4.6	18	10.4	147	85.0	0	0.0	173	100.0
Mother's Educational Level
8 Years or Less	0	0.0	20	13.0	134	87.0	0	0.0	154	100.0
9-11 Years	17	2.1	78	9.5	728	88.5	0	0.0	823	100.0
12 Years	19	1.2	84	5.4	1,465	93.4	0	0.0	1,568	100.0
13-15 Years	12	2.3	28	5.5	472	92.2	0	0.0	512	100.0
16+ Years	0	0.0	13	9.0	132	91.0	0	0.0	145	100.0
Unknown	0	0.0	0	0.0	15	100.0	0	0.0	15	100.0
Mother's Marital Status
Married	33	1.5	134	6.2	1,997	92.3	0	0.0	2,164	100.0
Not Married	15	1.4	89	8.5	949	90.1	0	0.0	1,053	100.0
Factor	Very Low Birthweight < 1,500 grams		Low Birthweight 1,500 - 2,499 grams		Normal Birthweight 2,500+ grams		Unknown Birthweight		Total
	Number	Percent	Number	Percent	Number	Percent	Number	Percent	Number	Percent