Table 3 Logistic regression model predicting the odds of recommending life extending treatment, for patients without and with cognitive impairment, by patient, treatment and physician characteristics
| Â | Patients without cognitive impairment | Patients with cognitive impairment | ||
|---|---|---|---|---|
Attribute | Odds ratio | P-value | Odds ratio | P-value |
Age (Reference: 75Â years old) | Â | Â | Â | Â |
 55 years old | 3.217 | 0.000 | 2.288 | 0.001 |
 35 years old | 6.130 | 0.000 | 4.332 | 0.000 |
Median life extension (Reference: 4Â months) | Â | Â | Â | Â |
 12 months | 6.099 | 0.000 | 3.321 | 0.000 |
 24 months | 11.810 | 0.000 | 3.910 | 0.000 |
5-year survival rate (Reference: 1Â %) | Â | Â | Â | Â |
 5 % | 2.165 | 0.000 | 1.448 | 0.130 |
 10 % | 3.563 | 0.000 | 2.104 | 0.000 |
Treatment cost (Reference: $100,000) | Â | Â | Â | Â |
 $55,000 | 2.993 | 0.000 | 2.503 | 0.000 |
 $10,000 | 5.193 | 0.000 | 4.024 | 0.000 |
Gender (Reference: male) | Â | Â | Â | Â |
 Female | 0.956 | 0.657 | 0.992 | 0.947 |
Years of experience | 1.024 | 0.000 | 0.986 | 0.049 |
Country of Basic Medical Training (Reference: Singapore) | Â | Â | Â | Â |
 Asia (other than Singapore) | 0.804 | 0.097 | 1.034 | 0.842 |
 Europe / N. America / Australia / New Zealand | 1.277 | 0.067 | 1.686 | 0.000 |
Additional Palliative Care Training (Reference: none) | Â | Â | Â | Â |
 Workshops on Palliative Care | 0.967 | 0.799 | 1.050 | 0.757 |
 Certificate, Diploma, or Degree in Palliative Care | 0.905 | 0.494 | 0.944 | 0.752 |