Table III.

Six-month mean cost per patient per month overall and by category.

Service	No progression (n = 734)	Progression (n = 268)	Cp–CNP	Cp/CNP	p-Value*
Overall cost	859.98	3527.4	2667.4	4.10	<0.001
Outpatient visits	36.68	99.92	63.24	2.72	<0.001
Acute care†	2.46	24.14	21.68	9.81	<0.001
Chemotherapy	655.75	2495.01	1839.26	3.8	<0.001
R-mono	487.07	849.50	362.43	1.74	<0.001
R-chemo	166.07	1610.86	1444.79	9.69	<0.001
Chemo	2.61	34.65	32.04	13.27	<0.001
Other medication	101.86	700.28	598.42	6.87	<0.001
Laboratories	11.35	28.53	17.18	2.51	<0.001
Minor procedures	2.79	8.79	6.00	3.15	<0.001
Other	0.59	3.02	2.43	5.11	<0.001
XRT	15.07	71.27	38.93	4.72	<0.001
RAD non-XRT	32.59	95.41	62.82	2.92	<0.001

C_p, cost of progression; C_Np, cost of not progressing; R-mono, rituximab monotherapy; R-chemo, rituximab-chemotherapy; Chemo, chemotherapy only; XRT, external radiation treatment; RAD non-XRT, radiation other than XRT.

^*Mann-Whitney U-test.

^†lnpatient and ER visits.