Table 2.
Comparison of dimensions of patient complexity, as measured by the Potential for Benefit Scale among those with and without prior history of CHD (N=1314)1
| CHD2 (N=235) | No CHD3 (N=1079) | Total Sample (N=1314) | Mean difference4 (±95% CI) | p-value5 | |
|---|---|---|---|---|---|
| Depressive Symptoms6 | 4.1 (2.5) | 3.7 (2.4) | 3.8 (2.5) | 0.4 (0.0,0.7) | .044 |
| Diabetes Burden7 | 3.9 (2.8) | 4.1 (2.9) | 4.0 (2.9) | 0.2 (-1.8,6.4) | .276 |
| Physical Function8 | 4.3 (3.0) | 3.4 (2.9) | 3.6 (3.0) | 0.9 (0.5,1.4) | <.001 |
| TIBI9 | 3.2 (1.9) | 2.4 (1.7) | 2.6 (1.7) | 0.8 (0.5,1.0) | <.001 |
| Passivity10 | 5.1 (1.8) | 5.4 (1.8) | 5.3 (1.8) | 0.3 (0.0,0.6) | .021 |
| Total PBS Score11 | 2.6 (1.1) | 2.4 (1.0) | 2.4 (1.1) | 0.2 (0.1,0.4) | .003 |
Table entries are means (SD). All variables rescaled to a range of 0 to 10 for presentation purposes.
Patients with a history of coronary heart disease (CHD) noted in the medical record.
Patients with no history of CHD noted in the medical record.
Difference between CHD and no CHD groups with 95% confidence interval of the difference.
p-value computed from independent samples t-test
Center for Epidemiology Studies Depression Scale, 11-item version; higher scores indicating the presence of more depressive symptoms.17
Diabetes burden scale measures impact of diabetes on health, social activities, lifestyle and finances; higher scores indicate a greater degree of diabetes burden.18-19
Physical Function scale of the Medical Outcomes Study Short-Form 36; Reverse-coded so that higher scores indicate poorer physical functioning.16
Total Illness Burden Index, a measure of the presence and severity of conditions comorbid to diabetes and/or heart disease; 7 disease-specific scale scores computed from 38 individual questionnaire items; higher TIBI scores indicate greater comorbidity.13-15
Provider-Dependent Health Care Orientation scale (PDHCO), measuring patient passivity; higher scores indicate greater passivity.20
Potential for Benefit Scale (PBS), a composite measure of patient complexity scored as a weighted mean of five measures (depressive symptoms, diabetes burden, physical function, TIBI and passivity), with weights determined by factor loadings on a single factor in principal components analysis