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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2017 Aug 24;26(9):1443–1449. doi: 10.1158/1055-9965.EPI-17-0220

Table 2.

Unadjusteda and adjusted cost during the first two years after the index date for OPC patients and matched controls

Mean expenditure in 2015 US Dollars (SD)
Type of cost Cases Controls Difference P
First two years(unadjusted)
  Total 134,454(108,635) 13,693(38,306) 120,802(81,472) <.001
  Inpatient services 24,341(48,972) 5,031(29,550) 19,310(40,444) <.001
  Outpatient services 106,604(82,821) 5,738(12,293) 100,866(59,275) <.001
  Outpatient prescription drugs 3,550(5,183) 2,924(6,661) 626(5,968) 0.11
First two years(adjusted)
  Total 163.639(114,893) 20,890(53,543) 139,749(89631) <.001
a

Unadjusted is the observed cost with no regression model estimate of cost for months not enrolled.

Abbreviation: SD, standard deviation.