Cost of Illness for Patients with Arthritis Receiving Multidisciplinary Rehabilitation Care
Table 5
(a) The influence of clinical subgroup, age, gender, comorbidity, and work status on total health care costs (sum of cost groups 1 to 3 for rehabilitation period and 6 months after) for patients with inflammatory disease. The results are presented as Unstandardised Coefficients () with 95% Confidence intervals
Variable
Model 1
Model 2
Model 3
Model 4
Clinical subgroup
ββ
ββ
β
Inflammatory disease rehab center
Ref.
Ref.
Ref.
Ref.
Inflammatory disease inpatient hospital unit
13,412 (8,744 to 18,080)**
12,952 (8,299 to 17,605)**
12,935 (8,173 to 17697)**
13,721 (8,806 to 18,635)**
Inflammatory disease outpatient hospital unit
β2,595 (β9,388 to 4,196)
β2,406 (β5,875 to 3,727)
β2,560 (β9,514 to 4,395)
β73 (β7,089 to 6,940)
Gender (ref. female) Male
β2,968 (β8,055 to 2,118)
β3,272 (β8,371 to 1,826)
β3,555 (β8,744 to 1,633)*
β4,025 (β9,402 to 1,352)
Age (ref. 67 or less) 68+
1,682 (β4,712 to 8,077)
1,843 (β4,583 to 8,271)
4,430 (β1,762 to 10,624)
4,045 (β2,379 to 10,469)
Comorbidity (ref. none)
β
β
β
β
βOne
3,170 (β2,373 to 8,714)
3,291 (β2,282 to 8,864)
3,795 (β1,849 to 9,439)
4,851 (β1,002 to 10,632)
βTwo or more
2,939 (β2,830 to 8,708)
2,274 (β3,457 to 8,005)
2,885 (β3,003 to 8,775)
3,346 (β2,759 to 9,452)
Working status (ref. employed) Not employed
1,732 (β3,288 to 6,753)
1,716 (β3,333 to 6,765)
448 (β4,589 to 5,485)
402 (β4,827 to 5,632)
MHAQ
β5,179 (β12,174 to 1,815)
β
1,151 (β4,092 to 6,396)
4,122 (β921 to 9,166)*
SF Physical function
β172 (β301 to β42)**
β106 (β202 to β11)*
β
β
SF Mental function
β1 (β21to 19)
41 (β21 to 19)
β
β
Assistive tools
1,447 (414 to 2,540)**
1,315 (268 to 2,361)*
1,619 (542 to 2,695)**
β
Constant
16,367 (4,568 to 28,168)**
10,292 (10763 to 18,819)**
3,367 (β3,134 to 9,869)
2,178 (β4,522 to 8,878)
Adj R-squared
0.3593
0.3518
0.3276
0.2750
Cost values (in Euro) are estimated means by OLS. All costs are presented in Euros: 1β¬ = 8 NOK.
*
P-value <ββ.05, **P-value <ββ.01. The difference between the three models is only the inclusion of different severity measures in addition to clinical setting, diagnosis, age, gender, and working status. Model 1: all severity measures are included: MHAQ, SF36 Physical function, SF36 Mental function, and assistive tools. Model 2: we include only SF36 Physical function, SF36 Mental function and assistive tools. Model 3: we include only MHAQ and assistive tools. Model 4: we include only MHAQ.
(b) The influence of clinical subgroup, age, gender, comorbidity, and work status on total health care costs (sum of cost groups 1 to 3 for rehabilitation period and 6 months after) for patients with osteoarthritis (OA). The results are presented as Unstandardised Coefficients () with 95% Confidence intervals
Variable
Model 1
Model 2
Model 3
Model 4
Clinical subgroup
OA (ref. conventional rehabilitation)
Ref.
Ref.
Ref.
Ref.
OA postsurgery rehabilitation
β675 (β2,664 to 1,313)
β220 (β2,135 to 1,694)
β683 (β2,658 to 1,290)
β57 (β2,723 to1,207)
Gender (ref. female) Male
β2,086 (β4,166 to β6)*
β2,037 (β4,125 to β50)
β2,103 (β4,142 to β65)*
1,915 (β3,903 to 72)
Age (ref. 67 or less) 68+
651 (β1,282 to 2585)
386 (β1,527 to 2,300)
693 (β1,217 to 2,605)
578 (β1,312 to 2,468)
Comorbidity (ref. none)
βOne
1,054 (β1,445 to 3,554)
1,080 (β1,429 to 3,590)
1,178 (β1,265 to 3,622)
1,148 (β1,292 to 3,589)
βTwo or more
1,341 (β1,160 to 3,842)
1,470 (β1,036 to 3,977)
1,514 (β891 to 3,920)
1,507 (β335 to 3,163)
Working status (ref. employed) Not employed
192 (β1,805 to 2,190)
β34 (β2,020 to 1,951)
263 (β1,707 to 2,234)
128 (β1,814 to 2,072)
MHAQ
1,512 (β365 to 3,390)
β
1,614 (β199 to 3,428)
1,414 (β335 to 3,163)
SF Physical function
β2 (β13 to 9)
β4 (β15 to 6)
β
β
SF Mental function
β1 (β9 to 6)
β2 (β9 to 6)
β
β
Assistive tools
β216 (β738 to 305)
β106 (β612 to 399)
β220 (β739 to 299)
β
Constant
6,592 (3,301 to 9,882)**
7,650 (4,621 to 10,679)**
6,158 (3,303 to 9,013)**
6,244 (3,399 to 9,090)**
Adj R-squared
0.0101
0.0128
0.0193
0.0209
Cost values (in Euro) are estimated means by OLS. All costs are presented in Euros: 1β¬ = 8 NOK.
*
-value <ββ.05, **-value <ββ.01. The difference between the three models is only the inclusion of different severity measures in addition to clinical setting, diagnosis, age, gender and working status. Model 1: all severity measures are included: MHAQ, SF36 Physical function, SF36 Mental function, and assistive tools. Model 2: we include only SF36 Physical function, SF36 Mental function, and assistive tools. Model 3: we include only MHAQ and assistive tools. Model 4: we include only MHAQ.