Cost of Illness for Patients with Arthritis Receiving Multidisciplinary Rehabilitation Care

Table 3

Mean costs in Euro (€) with 95% Confidence Intervals_B 3 months prior to, during, and 6 months after multidisciplinary rehabilitation in various clinical subgroups; the costs are presented according to the four cost groups.

	Cost group	Pre rehab stay	Rehabilitation stay	0–3 months post rehab stay	4–6 months post rehab stay	P-value^2
Inflamm. disease hospital (𝑛=48)	1	378 (88–422)	—	545 (87–595)	586 (110–649)	.16
	2	2,010 (−1,258–2,776)	11,884 (10,940–13,443)	3,808 (961–7,334)	1,073 (−1,475–1521)	.61
	3	640 (−172–850)	544 (261–587)	1,136 (190–1492)	1,136 (190–1492)	.45*
	4^1	8,191 (3,209–9,039)	3,158 (2,559–3,296)	8,480 (3,721–9,335)	8,480 (3,721–9,335)	.59*
Inflamm. disease outpatient hospital (𝑛=14)	1	518 (248–645)	—	652 (164–731)	600 (69–715)	.54
	2	1,448 (−1,991–2,385)	2,309 (1,628–2,374)	851 (−1,347–2,172)	85 (−2,035–104)	.40
	3	636 (−786–1,458)	371 (62–440)	637 (−813–1498)	637 (−813–1498)	1.000*
	4^1	6,059 (−532–8,516)	2,437 (1,891–2,522)	7,583 (1,410–9,849)	7,583 (1,410–9,849)	.20*
Inflamm. disease rehab centre (𝑛=50)	1	483 (362–606)	—	830 (626–1,035)	802 (595–1,009)	.01
	2	1,411 (160–2,663)	5,010 (4,703–5,316)	522 (83–961)	814 (−236–1,865)	.74
	3	232 (−69–534)	665 (545–786)	231 (−64–526)	231 (−64–526)	.76*
	4^1	9,637 (7,571–11,704)	4,773 (4,451–5,004)	10,215 (8,263–12,167)	10,215 (8,263–12,167)	.77*
OA conventional rehab centre (𝑛=63)	1	479 (181–533)	—	897 (302–1,074)	990 (201–1,367)	.005
	2	2,629 (−691–3,447)	4,780 (4,098–4,855)	165 (−767–238)	1,070 (−1,410–714)	.01
	3	73 (−530–72)	587 (336–600)	72 (−518–71)	72 (−518–71)	.65*
	4^1	7,997 (3,058–8,703)	4,608 (4,074–4,679)	9,191 (4,589–9,888)	9,191 (4,589–9,888)	.24*
OA postsurgery rehab (𝑛=131)	1	415 (138–448)	—	1,009 (498–1,112)	659 (225–678)	<.001
	2	17,268 (17,142–19,899)	3,704 (3,065–3,733)	1,207 (−67–1,603)	579 (−1,656–714)	<.001
	3	99 (−542–108)	430 (187–433)	89 (−505–91)	89 (−505–91)	.002*
	4^1	4,863 (438–5,176)	3,636 (3,161–3,648)	6,153 (1,854–6,549)	6,153 (1,854–6,549)	.21*

Cost groups 1–4 refer to costs related to health consumption in the primary healthcare services (cost group 1), secondary healthcare services (cost group 2), use of medication (cost group 3), and costs related to production loss in terms of sick leave (cost group 4). All costs are presented in Euros: 1€ = 8 NOK.
OA: osteoarthritis; rehab: rehabilitation
_B = Bootstrap 95% confidence interval.
¹Production loss includes only sick leave for employed patients. Age and disability pension are not included.
²P-values refer to testing for differences between the three time periods 3 months prior to, 0 to 3 months, and 4 to 6 months after rehabilitation stay within each of the clinical subgroups and cost group. Rank sum based on “Kruskal-Wallis equality-of-populations rank test” was used.