Table 3.
Incremental Effectiveness, Outpatient Costs, and Cost-effectiveness of Intervention vs Usual Care
| Incremental 24-mo Value, Mean (95% CI) | |||||
|---|---|---|---|---|---|
| DFDsa | QALYsb | Total Outpatient Costs, $c |
Outpatient Costs/DFD, $ |
Outpatient Costs/QALY, $ |
|
| Primary analysis | 114 (79 to 149) | 0.335 (−0.18 to 0.85) | −594 (−3421 to 2053) | −5.26 (−29.76 to 19.17) | −1773 (−2878 to 2878) |
| Sensitivity analysis based on Medicare reimbursement of $54 per diabetes nurse visit | 114 (79 to 149) | 0.335 (−0.18 to 0.85) | −1116 (−3768 to 1536) | −9.88 (−34.97 to 14.16) | −3297 (−4014 to 2722 |
Abbreviations: DFD, depression-free day; QALY, quality-adjusted life-year.
a
The incremental depression-free estimate was adjusted for age, sex, and baseline depression score.
b
The QALY estimate was based on baseline to 24-month changes in hemoglobin A1c, systolic blood pressure, and low-density lipoprotein cholesterol levels.
c
Estimated incremental 24-month total outpatient costs were adjusted for age, sex, and 12-month prebaseline total outpatient costs.