Table 4.

Relationships of eGFR with annualized healthcare charges by multivariate linear regression in the polycystic kidney disease sample free of baseline diabetes and cardiovascular disease (n = 1781)a

VariableParameter Estimate ($ per year [SEM])P
Total Charges
    Intercept3403 (7540)0.65
    Age (per year)318 (156)0.04
    Male gender−4664 (3641)0.20
    eGFR
        >90 ml/min levelreference
        61 to 90 ml/min level3344 (4966)0.50
        31 to 60 ml/min level10,788 (5386)0.045
        Per ml/min <304914 (403) <0.0001
Total Medical Charges
    Intercept3042 (7541)0.69
    Age (per year)291 (156)0.06
    Male gender−5581 (3660)0.13
    eGFR
        >90 ml/min levelreference
        61 to 90 ml/min level3460 (4975)0.49
        31 to 60 ml/min level9604 (5384)0.07
        Per ml/min ≤304805 (402)<0.0001
Inpatient Charges
    Intercept−5199 (26,584)0.85
    Age (per year)1339 (520)0.01
    Male gender−27,079 (13,632)0.048
    eGFR
        >90 ml/min levelreference
        61 to 90 ml/min level5722 (19,262)0.77
        31 to 60 ml/min level10,428 (19,194)0.59
        Per ml/min <301713 (1106)0.12
Pharmacy Charges
    Intercept595 (735)0.42
    Age (per year)35 (15)0.02
    Male gender681 (353)0.05
    eGFR
        >90 ml/min levelreference
        61 to 90 ml/min level108 (484)0.82
        31 to 60 ml/min level1428 (518)0.006
        Per ml/min <30128 (38)0.0009
  • a Charges were adjusted to the $2008 medical component of the Consumer Price Index.