Table 4.
Unadjusted odds ratios for surrogate variables associated with lower levels of confidence
| Independent Variable | Odds Ratio (95% Confidence Interval) |
p |
|---|---|---|
| No discussion in past with patient about treatment preferences | 3.70 (1.90–7.19) | .0002 |
| Older age (per 5 yrs intervals of increasing age) | 0.97 (0.86–1.09) | .6221 |
| Male sex | 2.23 (1.15–4.32) | .0175 |
| Hispanic | 1.42 (0.56–3.58) | .4571 |
| Race | ||
| Caucasian vs.non-Caucasian | 1.17 (0.56–2.46) | .6750 |
| African American vs. non-African American | 1.04 (0.33–3.28) | .9481 |
| Increasing level of education (5 categories) | 0.74 (0.50–1.10) | .1362 |
| Primary language is english | 0.77 (0.34–1.78) | .5427 |
| Catholic religion | 1.14 (0.55–2.35) | .7274 |
| Increasing level of religious influence on life | 0.85 (0.60–1.19) | .3343 |
| Relationship to patient | ||
| Spouse vs. nonspouse | 0.40 (0.17–0.97) | .0420 |
| Child vs. nonchild | 0.96 (0.49–1.87) | .8982 |
| Parent vs. nonparent | 1.11 (0.38–3.21) | .8515 |
| Decreasing Short Test of Functional Health Literacy in Adults score (by 5-point intervals) | 1.14 (0.85–1.53) | .3857 |
| Decreasing God Locus of Health Control Scale summary score by 5-point intervals (indicating stronger belief in God’s role in health) | 1.00 (0.84–1.19) | .9696 |
| Decreasing Life Orientation Test score (more optimistic) by 5-point intervals | 1.36 (0.89–2.08) | .1528 |
| Decreasing Patient Provider Orientation Scale score, by 1 point (more patient-centered) | 0.97 (0.69–1.37) | .8701 |
| Patient Health Questionnaire-2 score indicates depression(reverse) | 1.12 (0.57–2.19) | .7469 |
| No past surrogate experience | 2.37 (1.21–4.65) | .0123 |
| MD can predict if patient will live or die (decreasing agreement on 1–6 scale) | 1.02 (0.82–1.26) | .8904 |
| Decreasing agreement on 1–6 scale that sometimes physicians don’t tell family members the truth about prognosis | 0.83 (0.67–1.04) | .0988 |
| Decreasing agreement on 1–6 scale that it is important physician is honest about prognosis | 0.88 (0.52–1.48) | .6260 |
| Decreasing agreement on 1–6 scale that prefer doctor does not discuss chance of survival | 0.94 (0.74–1.19) | .5900 |
| Decreasing conflict with doctor on 0–10 scale | 1.01 (0.88–1.16) | .9232 |
| Decreasing doctor trust score by 5-point intervals | 1.82 (1.22–2.74) | .0040 |
| Decreasing quality of communication score by 5-point intervals | 1.15 (1.05–1.27) | .0040 |
| Acute Physiology and Chronic Health Evaluation II score on day of family interview/enrollment | 1.03 (0.96–1.11) | .3703 |