From: The effect on survival of continuing chemotherapy to near death
Variables | HR | (95%CI) | P-value | |
---|---|---|---|---|
Receipt of chemotherapy | No chemotherapy | 1.00 | - | - |
 | Standard chemotherapy | 0.80 | (0.76, 0.83) | < 0.001 |
 | Aggressive-approach chemotherapy | 0.82 | (0.72, 0.92) | < 0.001 |
Age at diagnosis | 65 | 1.00 | - | - |
 | Each increasing year | 1.01 | (1.00, 1.01) | < 0.001 |
Gender | Female | 1.00 | - | - |
 | Male | 1.09 | (1.05, 1.14) | < 0.001 |
Charlson comorbidity index | 0 | 1.00 | - | - |
 | 1 | 1.16 | (1.09, 1.23) | < 0.001 |
 | 2 ≤ | 1.28 | (1.18, 1.38) | < 0.001 |
Region of tumor registries | Northeast | 1.00 | - | - |
 | South | - | - | n.s. |
 | Midwest | - | - | n.s. |
 | West | 1.08 | (1.03, 1.13) | < 0.001 |
Socioeconomic status | Lowest quintile | 1.00 | - | - |
 | Each increasing quintile | - | - | n.s. |
Teaching hospital | No | 1.00 | - | - |
 | Yes | - | - | n.s. |
Year of death | 1991 | 1.00 | - | - |
 | 1992 | 1.11 | (1.04, 1.19) | < 0.01 |
 | 1993 | - | - | n.s. |
 | 1994 | - | - | n.s. |
 | 1995 | - | - | n.s. |
 | 1996 | - | - | n.s. |
 | 1997 | - | - | n.s. |
 | 1998 | 0.91 | (0.84, 0.97) | < 0.01 |
 | 1999 | 0.89 | (0.82, 0.96) | < 0.01 |