Table 2.

Patterns of Care Utilization

	All	No Integrated Visits	1+ Integrated Visit
Mean (SD) or No. (%)	(N=20,203)	(N=16,832)	(N=3,371)	P-value*
Teen visits
Preventive visits	1.2 (1.6)	1.2 (1.6)	1.6 (1.8)	<0.001
Acute visits	2.0 (5.5)	1.8 (5.0)	3.3 (7.5)	<0.001
Teens with no preventive visits	8494 (40.6%)	7409 (44.0%)	769 (22.8%)	<0.001
Days after birth, Median (IQR)	157 (67–258)	154 (63–257)	165 (78–261)	<0.001
Infant Visits
Infant preventive visits	4.7 (3.2)	4.7 (3.1)	4.7 (3.4)	0.99
Infant acute visits	4.3 (4.2)	4.1 (4.1)	5.3 (4.6)	<0.001
Infants with no preventive visits	763 (3.8%)	647 (4.0%)	89 (2.6%)	<0.001
Days after birth, Median (IQR)	145 (161–245)	144 (61–243)	150 (62–250)	<0.001
Visits at dyad level
Total preventive visits**	5.0 (3.8)	5.8 (3.7)	6.3 (4.1)	<0.001
Integrated preventive visits***	0.1 (0.3)	—	0.4 (0.7)	<0.001
Total acute visits	6.3 (7.4)	5.9 (6.9)	8.6 (9.2)	<0.001
Integrated acute visits	0.2 (0.7)	—	1.2 (1.3)	<0.001
Days after birth, Median (IQR)	—	—	146 (60–245)	—

^*P-values represent results of t-tests for continuous variables, chi-squared tests for categorical variables, and Wilcoxon rank sum test for median days after birth.

^**Total preventive visits at the dyad level sums infant preventive visits with teen preventive visits. In some cases, because of rounding, teen and infant visits do not always sum to total visits in this table.

An integrated preventive visit is a visit that occurred on the same day and with the same clinician identifier as a visit for the other member of the dyad, regardless of whether the other member of the dyad had an acute visit or a preventive visit. For example, a day where a teen had a preventive visit and an infant had an acute visit with the same clinician identifier would be counted as one integrated preventive visit and one integrated acute visit. In this table integrated preventive visits are a subset of total preventive visits.