Table 2. Factors of multiple myeloma inpatient mortality by logistic regression in Generalized Estimating Equation (GEE) model.
| Adjusted OR (95%CI) | P | |
|---|---|---|
| Hemodialysis | ||
| Without | Reference | |
| With | 3.044 (2.651–3.494) | <0.001*** |
| Gender | ||
| Male | 1.162 (1.034–1.305) | 0.012* |
| Female | Reference | |
| Age group (years) | ||
| ≦55 | Reference | |
| >55 | 1.511 (1.272–1.796) | <0.001*** |
| Low-income household | ||
| Without | Reference | |
| With | 1.613 (0.827–3.146) | 0.161 |
| Catastrophic illness# | ||
| Without | Reference | |
| With | 1.347 (1.171–1.549) | <0.001*** |
| CCI_R | 0.998 (0.942–1.057) | 0.944 |
| Inpatient season | ||
| Spring (March-May) | Reference | |
| Summer (June-August) | 0.898 (0.766–1.053) | 0.187 |
| Autumn (September-November) | 0.706 (0.601–0.828) | <0.001*** |
| Winter (December-Februrary) | 0.827 (0.703–0.974) | 0.023* |
| Urbanization level | ||
| High | 1.443 (1.134–1.811) | 0.003** |
| Middle | 1.726 (1.389–2.143) | <0.001*** |
| Low | Reference | |
| Level of care | ||
| Medical center | 0.864 (0.655–1.140) | 0.302 |
| Regional hospital | 0.897 (0.686–1.172) | 0.426 |
| Local hospital | Reference | |
| Department of hematology & oncology | ||
| Without | Reference | |
| With | 0.884 (0.782–0.999) | 0.049* |
| Surgical operation | ||
| Without | Reference | |
| With | 1.050 (0.911–1.210) | 0.497 |
| Length of days | 1.005 (1.005–1.006) | <0.001*** |
Adjusted OR = Adjusted Odds Ratio, adjusted for all variables in the table. CI = confidence interval. Nagelkerke R-square of model = 0.138. Outpatient location had multicollinearity with urbanization level. Medical cost had multicollinearity with length of d.
*P<0.05
**P<0.01
***P<0.001
# Catastrophic illness: Illness other than multiple myeloma contained the the Catastrophic Illnesses Patient Database.