Selected Factors by Birthweight of Infant
Jefferson 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	53	1.0	280	5.5	4,771	93.4	4	0.1	5,108	100.0
Maternal Age
< 20 Years	8	1.1	41	5.5	700	93.5	0	0.0	749	100.0
< 15 Years	0	0.0	0	0.0	17	100.0	0	0.0	17	100.0
Maternal Race
White	43	0.9	241	5.2	4,388	93.8	4	0.1	4,676	100.0
Black	10	2.6	37	9.4	345	88.0	0	0.0	392	100.0
Other	0	0.0	2	5.0	38	95.0	0	0.0	40	100.0
Births With Known Prenatal Care
First Trimester	34	0.8	212	5.1	3,882	94.0	2	0.0	4,130	100.0
Second Trimester	9	1.3	45	6.3	663	92.5	0	0.0	717	100.0
Third Trimester	1	0.6	11	7.0	146	92.4	0	0.0	158	100.0
No Prenatal Care	4	8.0	6	12.0	39	78.0	1	2.0	50	100.0
Gestational Age
< 37 Weeks	40	7.7	143	27.4	338	64.9	0	0.0	521	100.0
37+ Weeks	4	0.1	114	2.7	4,131	97.2	1	0.0	4,250	100.0
Unknown	9	2.7	23	6.8	302	89.6	3	0.9	337	100.0
Mother's Educational Level
8 Years or Less	2	0.9	14	6.1	214	93.0	0	0.0	230	100.0
9-11 Years	8	0.8	63	6.6	888	92.6	0	0.0	959	100.0
12 Years	29	1.3	138	6.2	2,046	92.3	3	0.1	2,216	100.0
13-15 Years	8	0.9	31	3.6	824	95.5	0	0.0	863	100.0
16+ Years	4	0.5	32	3.9	778	95.6	0	0.0	814	100.0
Unknown	2	7.7	2	7.7	21	80.8	1	3.8	26	100.0
Mother's Marital Status
Married	25	0.7	155	4.4	3,324	94.8	1	0.0	3,505	100.0
Not Married	28	1.7	125	7.8	1,447	90.3	3	0.2	1,603	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