Table 1.

Baseline characteristics of preventive care visits before 2007 (2005-2006)

	Child visits				Young adult visits
	Unweighted a (N = 916)		Weighted b (N = 36,247,982)		Unweighted (N = 331)		Weighted (N = 10,693,301)
Characteristic	Visits (N)	Proportion of visits (%)	Visits (N)	Proportion of visits (%, (95% CI c))	Visits (N)	Proportion of visits (%)	Visits (N)	Proportion of visits (%, (95% CI))
Urinalysis	180	19.7	7,347,141	20.3 (15.0, 26.8)	63	19.0	2,158,310	20.2 (14.6, 27.2)
Patient gender
Male	473	51.64	19,231,738	53.1 (47.9, 58.2)	85	25.7	3,087,855	28.9 (21.8, 37.1)
Female	443	48.36	17,016,244	46.9 (41.9, 52.1)	246	74.3	7,605,446	71.1 (62.9, 78.2)
Patient race/ethnicity
White	694	75.8	30,532,293	84.2 (78.7, 88.6)	240	72.5	8,441,612	78.9 (70.1, 85.7)
Black	119	13.0	3,068,705	8.5 (5.4, 13.0)	47	14.2	1,397,124	13.1 (8.3, 20.0)
Other	103	11.2	2,646,984	7.3 (4.9, 10.7)	44	13.3	854,565	8.0 (4.0, 15.3)
Physician specialty
Pediatrician	660	72.1	27,449,990	75.7 (69.3, 81.2)	14	4.2	679,551	6.4 (2.7, 14.1)
Family practitioner	256	28.0	8,797,992	24.3 (18.8, 30.7)	317	95.8	10,013,750	93.7 (85.9, 97.3)
Visit setting
Private practice	686	74.9	34,641,012	95.6 (91.8, 97.7)	231	69.8	10,406,117	97.3 (94.8, 98.6)
CHC	230	25.1	1,606,970	4.4 (2.4, 8.2)	100	30.2	287,184	2.7 (1.4, 5.2)

^aUnweighted estimates reflect the absolute number of visits in the study sample.

^bWeighted estimates are sample visits weighted using NAMCS patient visit frequencies to develop national estimates.

^cCI = Confidence Interval.