Table 3.

Geocoding match rates (percent of records geocoded) at the zip code (zip), street (str), and parcel (parc) level among 2005 births.^a

	Statewide		Buncombe County			Cabarrus County			Durham County			Guilford County			Pitt County			Sampson County			Wilson County
	Zip	Str	Zip	Str	Parc	Zip	Str	Parc	Zip	Str	Parc	Zip	Str	Parc	Zip	Str	Parc	Zip	Str	Parc	Zip	Str	Parc
All	96.8	88.0	97.5	83.5	83.6	99.6	89.9	92.1	97.8	93.4	95.5	99.4	97.5	93.5	98.6	86.9	80.2	98.7	76.5	39.8	99.4	82.1	82.9
Maternal race/ethnicity
NHW	96.5	89.7	97.5	82.9	83.4	99.6	91.0	92.4	96.1	94.5	94.6	99.5	97.8	94.0	99.0	89.6	82.2	100.0	88.5	44.8	99.8	86.0	84.0
NHB	97.2	86.2	97.9	87.5	88.5	99.1	85.6	92.4	98.5	92.0	95.8	99.2	97.6	93.2	98.5	83.4	78.9	98.2	77.9	46.0	99.1	80.9	83.7
Hispanic	97.6	85.5	98.2	84.6	81.0	99.8	90.1	90.7	99.2	94.5	95.8	99.4	96.6	92.8	96.7	86.1	74.4	97.1	56.6	26.2	99.5	76.9	78.4
Other	95.6	84.4	97.8	87.0	93.5	100.0	86.0	93.0	97.9	90.7	98.3	99.4	96.8	93.6	100.0	95.0	85.0	100.0	95.7	56.5	100.0	83.3	100.0
Maternal age(yrs)
15–19	97.0	84.4	96.5	79.9	78.2	99.5	91.6	88.1	99.7	93.9	95.0	99.1	97.1	94.5	97.9	81.3	75.7	97.4	79.1	38.3	100.0	78.3	83.1
20–24	97.5	86.1	98.3	81.2	81.5	99.8	91.8	91.1	98.9	93.7	94.7	99.3	97.3	93.5	98.1	86.2	74.6	99.3	77.7	38.3	99.7	81.2	78.2
25–29	97.0	88.3	97.3	81.9	83.0	99.9	89.3	93.1	98.1	92.7	97.0	99.6	97.6	92.9	98.9	87.5	81.9	98.9	78.7	42.9	98.9	85.9	85.6
30–34	96.0	90.2	97.3	86.4	87.1	99.2	87.1	92.4	96.1	92.5	94.8	99.3	97.5	93.6	98.9	88.3	84.5	98.8	73.4	35.3	99.5	80.8	84.5
35–39	96.1	91.0	97.5	88.0	87.6	99.3	92.7	94.1	97.1	95.7	95.9	99.6	98.2	93.8	99.4	90.5	85.2	98.4	65.6	49.2	99.0	86.6	87.6
40–44	95.8	89.0	100.0	92.7	86.8	100.0	83.3	94.4	97.8	95.7	93.5	99.2	97.0	95.4	100.0	85.7	82.9	90.9	72.7	45.5	100.0	57.1	78.6
Maternal education
<9th grade	97.7	82.3	99.3	79.7	76.4	100.0	92.4	91.3	99.8	94.1	94.1	99.3	95.3	92.6	96.9	79.7	71.1	98.7	60.4	30.9	100.0	78.3	78.3
Some high school	97.3	84.0	96.8	78.7	77.3	99.7	91.5	90.6	99.3	94.1	95.5	99.5	98.2	95.8	98.2	85.3	76.1	96.3	70.6	33.1	99.5	78.9	80.3
High school	97.2	86.3	97.0	80.7	79.8	99.1	90.7	89.0	98.5	93.6	94.8	99.1	97.0	93.0	98.8	85.4	74.6	98.7	78.3	39.2	99.4	81.8	83.0
Some college	97.0	88.9	97.6	84.3	87.7	99.8	90.8	92.9	98.2	91.7	94.7	99.5	97.7	92.2	98.2	85.6	79.6	100.0	86.5	44.4	99.0	83.9	83.9
College degree	95.7	93.1	98.1	89.1	89.7	99.7	86.9	95.5	96.3	93.5	96.5	99.5	98.0	94.1	99.5	91.4	88.9	100.0	85.9	57.6	99.5	86.8	87.8
Maternal marital status
Married	96.4	90.0	97.7	84.2	84.7	99.7	89.4	92.8	96.8	93.5	95.3	99.5	97.6	93.2	98.8	89.0	83.3	99.4	80.4	42.1	99.6	84.6	84.8
Not married	97.4	84.7	97.4	82.4	81.9	99.3	90.9	90.5	99.2	93.3	95.7	99.2	97.3	94.0	98.4	84.3	76.6	97.9	72.2	37.2	99.3	79.7	81.2
Gestational age at delivery
Term birth	96.8	88.1	97.7	83.9	84.3	99.6	89.7	92.0	97.8	93.7	95.6	99.4	97.4	93.7	98.6	87.2	80.1	98.6	75.6	39.3	99.3	81.9	82.4
Preterm birth	96.6	87.1	96.6	81.0	79.1	99.7	91.3	92.6	97.6	91.7	94.7	99.4	97.8	92.6	98.7	84.9	80.7	99.2	82.3	43.1	100.0	83.7	87.1
Urban-rural classification
Large central metro	99.5	97.5
Large fringe metro	99.3	89.2
Medium metro	95.4	91.6
Small metro	98.8	88.3
Micropolitan	96.2	81.9
Noncore	98.8	65.6

^aGray shading highlights geocoding rates that were significantly different (false discovery rate adjusted p-value < 0.05) across demographic or outcome subgroups.