| Before matching | After matching | |||||||
---|---|---|---|---|---|---|---|---|---|
Characteristics | CHOP | RCHOP | Std. diff | P value | CHOP | RCHOP | Std. diff | P value | |
 |  | N = 1,196 | N =2,825 |  |  | N = 1,099 | N = 1,099 |  |  |
Age at diagnosis | Â | Â | Â | Â | Â | Â | Â | Â | |
 | Mean ± SD | 56 · 7 ± 16 | 65 · 5 ± 14 | 0 · 62 | <·001 | 57 · 5 ± 16 | 58 · 6 ± 15 | 0 · 07 | 0 · 12 |
Age group | Â | Â | Â | Â | Â | Â | Â | Â | |
 | 0-19 | 1% | <1% | 0 · 09 | <·001 | <1% | <1% | 0 · 00 | 1 · 00 |
 | 20-59 | 56% | 25% | 0 · 67 |  | 53% | 53% | 0 · 00 |  |
 | 60-69 | 19% | 30% | 0 · 25 |  | 20% | 20% | 0 · 00 |  |
 | 70-79 | 20% | 33% | 0 · 30 |  | 21% | 21% | 0 · 00 |  |
 | 80+ | 5% | 12% | 0 · 22 |  | 6% | 6% | 0 · 00 |  |
Female | 47% | 48% | 0 · 01 | 0 · 74 | 47% | 48% | 0 · 00 | 0 · 93 | |
ACG group | Â | Â | Â | Â | Â | Â | Â | Â | |
 | 0 | <1% | <1% | 0 · 09 | <·001 | <1% | <1% | 0 · 00 | 0 · 96 |
 | 1-3 | 7% | 5% | 0 · 10 |  | 7% | 7% | 0 · 02 |  |
 | 4-6 | 24% | 17% | 0 · 18 |  | 23% | 23% | 0 · 00 |  |
 | 7-9 | 28% | 31% | 0 · 05 |  | 29% | 31% | 0 · 03 |  |
 | 10 + | 40% | 47% | 0 · 16 |  | 41% | 40% | 0 · 02 |  |
Income quintile | Â | Â | Â | Â | Â | Â | Â | Â | |
 | 1 | 16% | 17% | 0 · 02 | 0 · 18 | 16% | 15% | 0 · 04 | 0 · 62 |
 | 2 | 20% | 21% | 0 · 02 |  | 19% | 20% | 0 · 02 |  |
 | 3 | 20% | 19% | 0 · 02 |  | 21% | 21% | 0 |  |
 | 4 | 24% | 21% | 0 · 08 |  | 23% | 24% | 0 |  |
 | 5 | 20% | 22% | 0 · 06 |  | 20% | 20% | 0 · 01 |  |
 | Missing | <1% | <1% | 0 · 02 |  | <1% | <1% | 0 · 07 |  |
Severity of disease | Â | Â | Â | Â | Â | Â | Â | ||
 | Low | 32% | 30% | 0 · 04 | 0 · 04 | 31% | 31% | 0 · 00 | >0 · 99 |
 | High | 54% | 58% | 0 · 08 |  | 56% | 56% | 0 · 00 |  |
 | Unclassifiable | 15% | 12% | 0 · 07 |  | 13% | 13% | 0 · 00 |  |
Histology code | Â | Â | Â | Â | Â | Â | Â | Â | |
 | 9590 | 16% | 20% | 0 · 11 | <·001 | 16% | 16% | 0 · 01 | 0 · 92 |
 | 9591 | 3% | 3% | 0 · 02 |  | 3% | 2% | 0 · 03 |  |
 | 9640 | 80% | 69% | 0 · 25 |  | 79% | 80% | 0 · 02 |  |
 | 9680 | 2% | 9% | 0 · 29 |  | 2% | 2% | 0 · 00 |  |
Median Follow-up time (years) | 9 · 7 | 3 · 7 |  |  | 9 · 7 | 3 · 5 |  |  |