Table 1.

Demographic Characteristics of Infants With a Sweat Test, Overall and by Sweat Test Result, 18-Month Period Before and After Site Visit^a.

Characteristic	Overall		Initial Sweat Test Result
			QNS		Not QNS		P Value
	n	%	n	%	n	%
Race
White	571	80.9	71	12.4	500	87.6	.83
Black	93	13.2	10	10.8	83	89.2
Other	42	5.9	6	14.3	36	85.7
Gestational age
<39 weeks	218	30.5	44	20.2	174	79.8	<.001
≥39 weeks	497	69.5	43	8.7	454	91.3
Birth weight
<2000 g	10	1.4	4	40.0	6	60.0	.005
≥2000 g	723	98.6	81	11.2	642	88.8
NICU admission
Yes	87	11.7	19	21.8	68	78.2	.002
No	655	88.3	69	10.5	586	89.5
CF Care Center
A	258	34.8	18	7.0	240	93.0	.001
B	65	8.8	4	6.2	61	93.8
C	226	30.5	30	13.3	196	86.7
D	193	26.0	36	18.7	157	81.3
Total	742	100.0	88	11.9	654	88.1

Abbreviations: QNS, quantity not sufficient; NICU, neonatal intensive care unit; CF, cystic fibrosis.

^aMissing data are as follows: race (n = 36), gestational age (n = 27), birth weight (n = 9).

P value is significant if < .05.