Table 3.

Direct, Indirect, and Total Marginal Effects for the modified SAR probit model on likelihood of completion of the HPV series (N = 601).

ρNI (Effect of “Not Initiated” Neighbors)±	0.0314†
	Direct Effects	Indirect Effects		Total Effects
ρI (Substitution Effect)±	0.3863††	0.0004		0.3868††
	[0.1684, 0.6247]	[-0.0064, 0.0140]		[0.1702, 0.6231]
HPV-Specific Brochure	0.0300	0.0000		0.0300
	[-0.0348, 0.0900]	[-0.0009, 0.0015]		[-0.0343, 0.0904]
Parental Consent for Telephone Intervention	0.1477††	0.0002		0.1479††
	[0.0815, 0.2099]	[-0.0023, 0.0053]		[0.0811, 0.2115]
African American	−0.1297††	−0.0001		−0.1298††
	[-0.2309, −0.0375]	[-0.0050, 0.0022]		[-0.2328, −0.0377]
Age: 13-14	−0.0979†	−0.0001		−0.0980†
	[-0.1918, −0.0031]	[-0.0039, 0.0018]		[-0.1915, −0.0031]
Age: 15-16	−0.1201†	−0.0001		−0.1202†
	[-0.2149, −0.0248]	[-0.0049, 0.0023]		[-0.2136, −0.0248]
Age: 17-18	−0.1184	−0.0001		−0.1186
	[-0.2655, 0.0118]	[-0.0051, 0.0021]		[-0.2648, 0.0119]
Private Insurance	−0.0974	−0.0001		−0.0975
	[-0.3912, 0.1646]	[-0.0059, 0.0034]		[-0.3872, 0.1676]
Public Insurance	−0.0461	−0.0000		−0.0462
	[-0.1250, 0.0277]	[-0.0022, 0.0011]		[-0.1245, 0.0275]
Avg. Number Missed Appts.	−0.0372††	−0.0000		−0.0373††
	[-0.0675, −0.0093]	[-0.0016, 0.0006]		[-0.0671, −0.0093]
Refused HPV Vaccine	−0.0708	−0.0001		−0.0710
	[-0.1922, 0.0401]	[-0.0041, 0.0017]		[-0.1918, 0.0398]
Influenza Vaccine	0.0273	0.0000		0.0273
	[-0.0457, 0.1010]	[-0.0009, 0.0017]		[-0.0452, 0.1018]
TDAP Vaccine	−0.0739	−0.0001		−0.0741
	[-0.2424, 0.0954]	[-0.0038, 0.0020]		[-0.2421, 0.0947]
MCV Vaccine	0.1638	0.0002		0.1640
	[-0.0220, 0.3271]	[-0.0031, 0.0067]		[-0.0217, 0.3249]
Clinic 2	0.0477	0.0000		0.0477
	[-0.1193, 0.2133]	[-0.0022, 0.0038]		[-0.1197, 0.2114]
Clinic 3	−0.0325	−0.0000		−0.0326
	[-0.1288, 0.0565]	[-0.0021, 0.0012]		[-0.129, 0.0566]
Clinic 4	−0.0101	−0.0000		−0.0102
	[-0.1084, 0.0952]	[-0.0016, 0.0011]		[-0.1076, 0.0952]
ISD1	−0.1913††	−0.0002		−0.1916††
	[-0.2728, −0.1097]	[-0.0076, 0.0031]		[-0.2710, −0.1085]
ISD2	−0.2680††	−0.0003		−0.2684††
	[-0.4349, −0.0941]	[-0.0106, 0.0044]		[-0.4383, −0.0954]
ISD3	−0.2788††	−0.0004		−0.2793††
	[-0.5036, −0.0547]	[-0.0120, 0.0048]		[-0.5069, −0.0548]

Note: Significance displayed as typical for estimation using spatial models. Confidence intervals are shown in brackets. † indicates significance at 0.05 and 0.95 CI; †† indicates significance at 0.01 and 0.99 CI.

^± Estimate for ρ_NI is a parameter estimate (marginal effects not estimable). The standard deviation of ρ_NI is 0.0288.