Table 3.

Per-patient-per-month all-cause healthcare costs over the entire follow-up period.

	Entire follow-up period
	PN cases	Non-PN controls	p value
	n = 1387	n = 2594
All-cause healthcare costs (PPPM)
Inpatient-admission costs, mean (SD)	$4750 ($9944)	$4002 ($8993)	0.016
Outpatient medical costs, mean (SD)	$8100 ($8,341)	$7408 ($8,007)	0.010
ER costs, mean (SD)	$126 ($620)	$92 ($374)	0.029
Outpatient office-visit costs, mean (SD)	$216 ($302)	$203 ($329)	0.214
Outpatient hospital-based visit costs, mean (SD)	$4906 ($6410)	$4076 ($6280)	<0.001
Laboratory-testing costs, mean (SD)	$144 ($309)	$140 ($290)	0.687
Outpatient prescription costs, mean (SD)	$3749 ($3312)	$3681 ($3596)	0.555
Total costs, mean (SD)	$16,600 ($14,450)	$15,090 ($13,399)	0.001
Quarterly healthcare costs (PPPM)
0–90 days postindex, n	1381	2583
Total costs, mean (SD)	$22,777 ($19,074)	$19,460 ($16,064)	<0.001
91–180 days postindex, n	1299	2286
Total costs, mean (SD)	$24,402 ($24,760)	$19,235 ($19,769)	<0.001
181–270 days postindex, n	1168	1986
Total costs, mean (SD)	$15,766 ($21,032)	$14,052 ($18,286)	0.008
271–360 days postindex, n	1026	1682
Total costs, mean (SD)	$11,955 ($15,774)	$11,518 ($15,756)	0.404

ER, emergency department (room); PN, peripheral neuropathy; PPPM, per patient per month; SD, standard deviation.