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. Author manuscript; available in PMC: 2023 Apr 1.
Published in final edited form as: Am Heart J. 2021 Dec 16;246:65–73. doi: 10.1016/j.ahj.2021.11.021

Table 5.

Multivariable linear regression model examining the association between heart failure and inflation adjusted costs ($) per hospitalization among older adults with acute myocardial infarction during index admission in Premier Healthcare Database from 2000 to 2016.

VARIABLES (1) (2) (3) (4) (5) (6)
Model 1 Model 2 Model 3 Model 4 Model 5 Model 6
Heart Failure −2,770***
(101.1)
−2,771***
(101.0)
−1,534***
(119.1)
−961.2***
(118.5)
1,146***
(101.6)
1,075***
(101.4)
Age −562.7***
(5.910)
−558.0***
(5.912)
−502.1***
(6.526)
−426.5***
(6.549)
−60.18***
(5.678)
−71.61***
(5.672)
Female Gender −1,981***
(55.45)
−2,012***
(55.45)
−1,923***
(55.71)
−1,810***
(55.34)
−575.4***
(47.49)
−555.9***
(47.39)
White −1,420***
(63.43)
−1,960***
(68.62)
−1,973***
(68.15)
−1,907***
(58.36)
−1,907***
(58.24)
Hypertension 208.4***
(65.08)
111.6*
(64.64)
−270.3***
(55.36)
−99.24*
(55.39)
Frailty −1,900***
(94.35)
−1,568***
(93.80)
−510.0***
(80.36)
−538.0***
(80.20)
PCI 4,908***
(60.89)
9,105***
(53.13)
9,281***
(53.17)
CABG 38,238***
(92.67)
38,341***
(92.51)
Hospital Death 3,370***
(77.12)
Constant 63,154***
(483.8)
63,852***
(484.7)
59,719***
(526.7)
51,938***
(531.9)
16,942***
(463.3)
17,345***
(462.5)
Observations 469,827 469,401 468,217 468,217 468,217 468,217
R-squared 0.026 0.027 0.028 0.041 0.297 0.300

Standard errors in parentheses

***

p<0.01,

**

p<0.05,

*

p<0.1

Abbreviations: HF = heart failure; PCI = percutaneous coronary intervention; CABG = coronary artery bypass graft.

α

Frailty was defined according to the claims-based frailty index derived from inpatient and outpatient data from 6 months prior to the acute myocardial infarction admission.