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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Health Aff (Millwood). 2016 Jan 1;35(1):44–53. doi: 10.1377/hlthaff.2015.0752

Exhibit 3.

Estimated Effect Of A Consultation With A Palliative Care Team Within Two Days Of Admission On Total Direct Hospital Costs For Patients With Advanced Cancer, By Elixhauser Comorbidity Score At Admission

Sample Utilization summary Primary results
Comorbidity score Compariso
n group
Treatme
nt group
All
patie
nts
Proporti
on in
treatmen
t group
Mean
direct
costs per
patient
Mean
LOS
per
patient
(days)
Estimated
mean
treatment
effecta
95% CI Implied
mean
savingb
0–1 207 28 235 12% $8,440 7.4 −$1,775 −5,093, 1,544 18%
2–3 276 86 362 24 8,528 7.0 −2,321* −3,869, −773 22
4 or higher 230 79 309 26 10,030 8.2 −3,515* −5,949, −1,081 32

SOURCE Authors’ analysis. NOTES We regressed total direct costs against a binary intervention variable, the independent variables listed in Exhibit 1, and fixed-effects variables to control for hospital site, applying subsample-specific propensity score weights in all cases. Further details are available in the Appendix (see Note 25 in text). Of the 906 matched patients, 98 had an advanced cancer that was not lymphoma, metastatic cancer, or a solid tumor. Of these, 49 (50 percent) had an advanced cancer diagnosis but no comorbidity on the Elixhauser comorbidity scale and thus had an Elixhauser comorbidity score of 0, as explained in the text. The other 49 had an Elixhauser comorbidity score of 1–8 (median: 2), with their cancer diagnosis unaccounted for in the score. Costs are in 2011 dollars. Significance refers to the estimated mean treatment effect.LOS is length-of-stay. CI is confidence interval.

a

The estimated effect on total direct hospital cost of moving a patient from the comparison arm to the treatment arm, holding all other values constant.

b

Savings in total direct hospital costs resulting from the consultation. Further details on how these savings were calculated are available in the Appendix (see Note 25 in text).

*

p < 0.01