Table 2

Partial, Unstandardized (B) Coefficients (Dollar Values) Obtained from Three-Step Multiple Linear Regression Models of the Changes in Predicted Annual Medical Expenditures at the One-Year Annual Follow-Up among the ACTIVE Participants (Weighted N = 1,804) in the Analytic Sample.

Treatment Group

Change in Expenditures at the

    First
Annual Follow-up

Change in Expenditures at the

    First
Annual Follow-up

Change in Expenditures at the

    First
Annual Follow-up


Step One

Step Two

Step Three


Memory

54.70

80.66

69.29


Reasoning

107.35

121.23

121.22


Speed of Processing

-222.55*

-215.49*

-243.99*


    Notes
: The analytic sample was restricted to ACTIVE participants successfully re-interviewed at the fifth annual follow-up, with propensity score weighting used to adjust for potential attrition bias, in order to avoid compositional incomparability to our prior report [19]. Step one includes the three treatment group variables. Step two includes the three treatment group variables, and age, race, education, MMSE, ADLs, IADLs, EPT scores, and medical conditions. Step three includes the three treatment group variables, age, race, education, MMSE, ADLs, IADLs, EPT scores, and medical conditions, as well as the baseline PCS and MCS scores. The control group is the omitted or reference category.

* = p < .05

Wolinsky et al. BMC Health Services Research 2009 9:109   doi:10.1186/1472-6963-9-109

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