Selected Factors by Birthweight of Infant
Mason 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	41	1.4	158	5.5	2,663	93.0	1	0.0	2,863	100.0
Maternal Age
< 20 Years	10	1.9	34	6.6	469	91.4	0	0.0	513	100.0
< 15 Years	0	0.0	2	22.2	7	77.8	0	0.0	9	100.0
Maternal Race
White	41	1.4	157	5.5	2,645	93.0	1	0.0	2,844	100.0
Black	0	0.0	0	0.0	15	100.0	0	0.0	15	100.0
Other	0	0.0	1	25.0	3	75.0	0	0.0	4	100.0
Births With Known Prenatal Care
First Trimester	33	1.5	116	5.3	2,045	93.2	0	0.0	2,194	100.0
Second Trimester	2	0.5	22	5.0	418	94.6	0	0.0	442	100.0
Third Trimester	0	0.0	2	2.7	72	97.3	0	0.0	74	100.0
No Prenatal Care	1	3.7	5	18.5	21	77.8	0	0.0	27	100.0
Gestational Age
< 37 Weeks	38	12.5	74	24.3	193	63.3	0	0.0	305	100.0
37+ Weeks	1	0.0	73	3.1	2,297	96.9	0	0.0	2,371	100.0
Unknown	2	1.1	11	5.9	173	92.5	1	0.5	187	100.0
Mother's Educational Level
8 Years or Less	0	0.0	11	11.0	89	89.0	0	0.0	100	100.0
9-11 Years	6	1.0	51	8.5	545	90.5	0	0.0	602	100.0
12 Years	24	1.7	67	4.7	1,341	93.6	0	0.0	1,432	100.0
13-15 Years	8	1.6	19	3.9	459	94.4	0	0.0	486	100.0
16+ Years	2	0.9	10	4.3	218	94.8	0	0.0	230	100.0
Unknown	1	7.7	0	0.0	11	84.6	1	7.7	13	100.0
Mother's Marital Status
Married	25	1.2	102	4.9	1,973	93.9	1	0.0	2,101	100.0
Not Married	16	2.1	56	7.3	690	90.6	0	0.0	762	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