Table 3.

Adjusted Mean Costs per Patient in the 180 days Postindex Discharge

	Predicted Mean Cost per Patient (95% CI)		p‐Value
	PN	Control
Full population sample	n = 448	n = 527
Billable costs
Hospitalizations	$5,857 ($4,802–6,911)	$7,081 ($6,034–8,129)	.11
ED visits	$103 ($81–125)	$108 ($88–128)	.75
Outpatient visits	$408 ($371–444)	$405 ($371–444)	.90
Total billable costs	$6,580 ($5,518–7,642)	$7,739 ($6,699–8,780)	.13
Nonbillable costs
PN costsa	$131	$0
Phone call costs	$351 ($320–382)	$253 ($230–277)	<.01
Total nonbillable costs	$483 ($450–516)	$254 ($232–276)	<.01
Total cost per patient	$7,073 ($5,992–8,153)	$7,986 ($6,950–9,023)	.24
Under 60 sample	n = 121	n = 196
Billable costs
Hospitalizations	$8,433 ($6,136–10,731)	$8,026 ($6,157–9,895)	.79
ED visits	$223 ($162–284)	$183 ($139–227)	.31
Outpatient visits	$465 ($376–553)	$416 ($351–482)	.40
Total billable costs	$9,383 ($7,067–11,699)	$8,771 ($6,918–10,624)	.69
Nonbillable costs
PN costsa	$131	$0
Phone call costs	$437 ($373–501)	$281 ($242–320)	<.01
Total nonbillable costs	$571 ($501–641)	$280 ($243–317)	<.01
Total cost per patient	$9,942 ($7,556–12,327)	$9,046 ($7,180–10,912)	.58
60 and older sample	n = 327	n = 331
Billable costs
Hospitalizations	$4,553 ($3,488–5,617)	$6,841 ($5,566–8,117)	.01
ED visits	$48 ($34–63)	$73 ($55–90)	.04
Outpatient visits	$389 ($352–426)	$395 ($358–432)	.83
Total billable costs	$5,189 ($4,111–6,268)	$7,447 ($6,184–8,710)	.01
Nonbillable costs
PN costsa	$131	$0
Phone call costs	$312 ($277–346)	$243 ($213–272)	<.01
Total nonbillable costs	$447 ($410–484)	$241 ($214–267)	<.01
Total cost per patient	$5,676 ($4,553–6,799)	$7,640 ($6,372–8,907)	.03

^aPatient navigators (PNs) costs are not derived from regression models; each PN patient is assigned the same PN cost. p < .05 in bold.