Table 4.
Demographic characteristics of low risk study patients
| No adjuvant therapy n=291 (%) | Adjuvant chemo with or without radiation n=44 (%) | p value | |
|---|---|---|---|
| Age (years, median) (IQR) | 69 (63–76) | 61(58–67) | <0.001 |
| Sex (female) | 51(18) | 8(18) | 1.00 |
| Race | 0.50 | ||
| White | 281(97) | 43(100) | |
| Black | 4(1) | 0(0) | |
| Other | 5(2) | 0(0) | |
| Year of diagnosis, median (IQR) | 2008 (2006–2010) | 2007 (2005–2008) | 0.008 |
| CDCC Score | 0.33 | ||
| 0 | 184(63) | 28(64) | |
| 1 | 83(29) | 15(34) | |
| 2+ | 24(8) | 1(2) | |
| Insurance status | 0.002 | ||
| Government | 195(69) | 19(43) | |
| Private | 86(30) | 25(57) | |
| None | 3(1) | 0(0) | |
| Facility location | 0.62 | ||
| Metro | 224(80) | 32(80) | |
| Urban | 50(18) | 6(15) | |
| Rural | 7(3) | 2(5) | |
| Facility type | 0.85 | ||
| Community cancer program | 13(5) | 1(2) | |
| Comprehensive community cancer program | 105(36) | 18(41) | |
| Integrated network cancer program | 24(8) | 4(9) | |
| Academic/research program | 149(51) | 21(48) | |
| Pathologic T stage | <0.001 | ||
| 2 | 190(65) | 12(27) | |
| 3 | 101(35) | 32(73) | |
| Tumor size (median mm) (IQR) | 30(20–45) | 43(30–61) | <0.001 |
| Grade | 0.50 | ||
| Moderately differentiated | 250(86) | 40(91) | |
| Well differentiated | 41(14) | 4(9) | |
| Adjuvant radiation | 0(0) | 33(75) | N/A |
| Median survival (months) (IQR) | 59(49–74) | 54(33–95) | 0.71 |
| Mortality events | 167(57) | 30(68) | 0.23 |
| Median follow-up (months) (IQR) | 45(24–78) | 48(22–86) | 0.63 |
IQR indicates Interquartile Range, CDCC, Charlson-Deyo Comorbidity Index