Univariate analysis of variables influencing LFS, RI, TRM, and OS
| . | N . | LFS . | RI . | TRM . | OS . |
|---|---|---|---|---|---|
| Median age at diagnosis, y | |||||
| Younger than 7.3 | 193 | 61 ± 4 | 38 ± 4 | 2 ± 1 | 66 ± 4 |
| 7.3 or older | 194 | 58 ± 4 | 40 ± 4 | 3 ± 1 | 64 ± 4 |
| P | .66 | .89 | .23 | .75 | |
| Median age at ABMT, y | |||||
| Younger than 7.8 | 193 | 61 ± 4 | 38 ± 4 | 2 ± 1 | 66 ± 4 |
| 7.8 or older | 194 | 58 ± 4 | 40 ± 4 | 3 ± 1 | 64 ± 4 |
| P | .81 | .92 | .57 | .92 | |
| Median WBC count at diagnosis | |||||
| Lower than 17 × 109/L | 167 | 63 ± 4 | 35 ± 4 | 3 ± 1 | 65 ± 4 |
| 17 × 109/L and higher | 169 | 55 ± 4 | 44 ± 4 | 1 ± 1 | 64 ± 4 |
| P | .16 | .13 | .69 | .86 | |
| Sex | |||||
| Male | 204 | 58 ± 4 | 41 ± 4 | 2 ± 1 | 63 ± 4 |
| Female | 183 | 62 ± 4 | 36 ± 4 | 3 ± 1 | 67 ± 4 |
| P | .35 | .24 | .44 | .44 | |
| FAB subtype | |||||
| M3 | 36 | 77 ± 7 | 18 ± 7 | 6 ± 4 | 80 ± 7 |
| M0 and M6 | 16 | 29 ± 14 | 71 ± 14 | 0 | 47 ± 13 |
| Other subtype | 335 | 59 ± 3 | 40 ± 3 | 2 ± 1 | 64 ± 3 |
| P | .023-150 | .0063-150 | .5 | .13 | |
| Cytogenetics | |||||
| Good | 63 | 68 ± 6 | 29 ± 6 | 5 ± 3 | 74 ± 6 |
| Normal/intermediate | 102 | 61 ± 5 | 38 ± 5 | 1 ± 1 | 73 ± 5 |
| Poor | 32 | 65 ± 9 | 33 ± 9 | 3 ± 3 | 65 ± 9 |
| NA/failed | 190 | 56 ± 4 | 43 ± 4 | 3 ± 1 | 60 ± 4 |
| P | .45 | .27 | .71 | .21 | |
| No. induction courses to reach CR1 | |||||
| 1 | 234 | 63 ± 4 | 36 ± 3 | 2 ± 1 | 68 ± 3 |
| 2 | 92 | 60 ± 5 | 39 ± 5 | 3 ± 2 | 65 ± 5 |
| More than 2 | 29 | 48 ± 9 | 50 ± 9 | 3 ± 3 | 50 ± 9 |
| P(trend) | .1 | .1 | .75 | .043-150 | |
| 1 or 2 courses (together) | 62 ± 3 | 37 ± 3 | 2 ± 1 | 67 ± 3 | |
| P (1 or 2 courses vs >2) | .08 | .1 | .6 | .0163-150 | |
| Median interval diagnosis to CR1, d | |||||
| Fewer than 38 | 188 | 63 ± 4 | 36 ± 4 | 2 ± 1 | 70 ± 4 |
| 38 or more | 199 | 57 ± 4 | 41 ± 4 | 3 ± 1 | 61 ± 4 |
| P | .1 | .17 | .24 | .033-150 | |
| No. consolidation courses between CR1 and ABMT | |||||
| 3 or fewer | 145 | 63 ± 4 | 35 ± 4 | 3 ± 2 | 70 ± 4 |
| More than 3 | 86 | 69 ± 5 | 31 ± 5 | 0 | 70 ± 5 |
| P | .35 | .59 | .09 | .85 | |
| Interval CR1 to ABMT, d | |||||
| Fewer than 170 (5th percentile) | 310 | 57 ± 3 | 42 ± 3 | 3 ± 1 | 64 ± 3 |
| 170 or more | 77 | 70 ± 5 | 29 ± 5 | 0 | 70 ± 5 |
| P | .0143-150 | .043-150 | .1 | .2 | |
| Source of stem cells | |||||
| BM | 318 | 60 ± 3 | 38 ± 3 | 3 ± 1 | 66 ± 3 |
| PB | 60 | 61 ± 8 | 37 ± 8 | 2 ± 2 | 60 ± 10 |
| P | .81 | .74 | .76 | .64 | |
| Purging | |||||
| No | 267 | 56 ± 3 | 43 ± 3 | 2 ± 1 | 61 ± 3 |
| Yes | 120 | 68 ± 5 | 30 ± 4 | 3 ± 2 | 74 ± 4 |
| P | .09 | .043-150 | .21 | .07 | |
| Conditioning regimen | |||||
| TBI + other chemotherapy | 157 | 63 ± 4 | 34 ± 4 | 5 ± 2 | 67 ± 4 |
| Busulfan + other chemotherapy | 138 | 59 ± 4 | 40 ± 4 | 2 ± 1 | 62 ± 5 |
| BAVC | 37 | 35 ± 8 | 65 ± 8 | 0 | 49 ± 8 |
| Other chemotherapy | 55 | 65 ± 7 | 34 ± 7 | 0 | 78 ± 7 |
| OverallP | .033-150 | .0073-150 | .08 | .033-150 | |
| P for TBI vs no TBI | .27 | .07 | .0123-150 | .64 | |
| P for TBI + other chemotherapy vs busulfan + other chemotherapy | .43 | .18 | .12 | .51 | |
| Median no. nucleated cells infused BM | |||||
| Less than 2.85 × 108/kg | 120 | 63 ± 4 | 36 ± 5 | 2 ± 1 | 71 ± 4 |
| 2.85 × 108/kg or more | 120 | 54 ± 5 | 45 ± 5 | 3 ± 1 | 56 ± 5 |
| P | .21 | .23 | .67 | .033-150 | |
| Median PB | |||||
| Less than 8.8 × 108/kg | 26 | 53 ± 11 | 44 ± 11 | 5 ± 5 | 55 ± 14 |
| 8.8 × 108/kg or more | 27 | 74 ± 9 | 26 ± 9 | 0 | 70 ± 12 |
| P | .29 | .4 | .32 | .39 | |
| BM and nucleated cells | |||||
| BM less than 2.85 × 108/kg | 120 | 63 ± 5 | 36 ± 5 | 2 ± 1 | 71 ± 4 |
| Other | 180 | 56 ± 4 | 42 ± 4 | 3 ± 1 | 58 ± 4 |
| P | .25 | .27 | .73 | .043-150 | |
| Year of transplantation, median | |||||
| Before 1993 | 195 | 60 ± 3 | 39 ± 3 | 2 ± 1 | 65 ± 3 |
| 1993 or later | 192 | 74 ± 9 | 37 ± 4 | 3 ± 1 | 66 ± 4 |
| P | .29 | .65 | .63 | .99 |
| . | N . | LFS . | RI . | TRM . | OS . |
|---|---|---|---|---|---|
| Median age at diagnosis, y | |||||
| Younger than 7.3 | 193 | 61 ± 4 | 38 ± 4 | 2 ± 1 | 66 ± 4 |
| 7.3 or older | 194 | 58 ± 4 | 40 ± 4 | 3 ± 1 | 64 ± 4 |
| P | .66 | .89 | .23 | .75 | |
| Median age at ABMT, y | |||||
| Younger than 7.8 | 193 | 61 ± 4 | 38 ± 4 | 2 ± 1 | 66 ± 4 |
| 7.8 or older | 194 | 58 ± 4 | 40 ± 4 | 3 ± 1 | 64 ± 4 |
| P | .81 | .92 | .57 | .92 | |
| Median WBC count at diagnosis | |||||
| Lower than 17 × 109/L | 167 | 63 ± 4 | 35 ± 4 | 3 ± 1 | 65 ± 4 |
| 17 × 109/L and higher | 169 | 55 ± 4 | 44 ± 4 | 1 ± 1 | 64 ± 4 |
| P | .16 | .13 | .69 | .86 | |
| Sex | |||||
| Male | 204 | 58 ± 4 | 41 ± 4 | 2 ± 1 | 63 ± 4 |
| Female | 183 | 62 ± 4 | 36 ± 4 | 3 ± 1 | 67 ± 4 |
| P | .35 | .24 | .44 | .44 | |
| FAB subtype | |||||
| M3 | 36 | 77 ± 7 | 18 ± 7 | 6 ± 4 | 80 ± 7 |
| M0 and M6 | 16 | 29 ± 14 | 71 ± 14 | 0 | 47 ± 13 |
| Other subtype | 335 | 59 ± 3 | 40 ± 3 | 2 ± 1 | 64 ± 3 |
| P | .023-150 | .0063-150 | .5 | .13 | |
| Cytogenetics | |||||
| Good | 63 | 68 ± 6 | 29 ± 6 | 5 ± 3 | 74 ± 6 |
| Normal/intermediate | 102 | 61 ± 5 | 38 ± 5 | 1 ± 1 | 73 ± 5 |
| Poor | 32 | 65 ± 9 | 33 ± 9 | 3 ± 3 | 65 ± 9 |
| NA/failed | 190 | 56 ± 4 | 43 ± 4 | 3 ± 1 | 60 ± 4 |
| P | .45 | .27 | .71 | .21 | |
| No. induction courses to reach CR1 | |||||
| 1 | 234 | 63 ± 4 | 36 ± 3 | 2 ± 1 | 68 ± 3 |
| 2 | 92 | 60 ± 5 | 39 ± 5 | 3 ± 2 | 65 ± 5 |
| More than 2 | 29 | 48 ± 9 | 50 ± 9 | 3 ± 3 | 50 ± 9 |
| P(trend) | .1 | .1 | .75 | .043-150 | |
| 1 or 2 courses (together) | 62 ± 3 | 37 ± 3 | 2 ± 1 | 67 ± 3 | |
| P (1 or 2 courses vs >2) | .08 | .1 | .6 | .0163-150 | |
| Median interval diagnosis to CR1, d | |||||
| Fewer than 38 | 188 | 63 ± 4 | 36 ± 4 | 2 ± 1 | 70 ± 4 |
| 38 or more | 199 | 57 ± 4 | 41 ± 4 | 3 ± 1 | 61 ± 4 |
| P | .1 | .17 | .24 | .033-150 | |
| No. consolidation courses between CR1 and ABMT | |||||
| 3 or fewer | 145 | 63 ± 4 | 35 ± 4 | 3 ± 2 | 70 ± 4 |
| More than 3 | 86 | 69 ± 5 | 31 ± 5 | 0 | 70 ± 5 |
| P | .35 | .59 | .09 | .85 | |
| Interval CR1 to ABMT, d | |||||
| Fewer than 170 (5th percentile) | 310 | 57 ± 3 | 42 ± 3 | 3 ± 1 | 64 ± 3 |
| 170 or more | 77 | 70 ± 5 | 29 ± 5 | 0 | 70 ± 5 |
| P | .0143-150 | .043-150 | .1 | .2 | |
| Source of stem cells | |||||
| BM | 318 | 60 ± 3 | 38 ± 3 | 3 ± 1 | 66 ± 3 |
| PB | 60 | 61 ± 8 | 37 ± 8 | 2 ± 2 | 60 ± 10 |
| P | .81 | .74 | .76 | .64 | |
| Purging | |||||
| No | 267 | 56 ± 3 | 43 ± 3 | 2 ± 1 | 61 ± 3 |
| Yes | 120 | 68 ± 5 | 30 ± 4 | 3 ± 2 | 74 ± 4 |
| P | .09 | .043-150 | .21 | .07 | |
| Conditioning regimen | |||||
| TBI + other chemotherapy | 157 | 63 ± 4 | 34 ± 4 | 5 ± 2 | 67 ± 4 |
| Busulfan + other chemotherapy | 138 | 59 ± 4 | 40 ± 4 | 2 ± 1 | 62 ± 5 |
| BAVC | 37 | 35 ± 8 | 65 ± 8 | 0 | 49 ± 8 |
| Other chemotherapy | 55 | 65 ± 7 | 34 ± 7 | 0 | 78 ± 7 |
| OverallP | .033-150 | .0073-150 | .08 | .033-150 | |
| P for TBI vs no TBI | .27 | .07 | .0123-150 | .64 | |
| P for TBI + other chemotherapy vs busulfan + other chemotherapy | .43 | .18 | .12 | .51 | |
| Median no. nucleated cells infused BM | |||||
| Less than 2.85 × 108/kg | 120 | 63 ± 4 | 36 ± 5 | 2 ± 1 | 71 ± 4 |
| 2.85 × 108/kg or more | 120 | 54 ± 5 | 45 ± 5 | 3 ± 1 | 56 ± 5 |
| P | .21 | .23 | .67 | .033-150 | |
| Median PB | |||||
| Less than 8.8 × 108/kg | 26 | 53 ± 11 | 44 ± 11 | 5 ± 5 | 55 ± 14 |
| 8.8 × 108/kg or more | 27 | 74 ± 9 | 26 ± 9 | 0 | 70 ± 12 |
| P | .29 | .4 | .32 | .39 | |
| BM and nucleated cells | |||||
| BM less than 2.85 × 108/kg | 120 | 63 ± 5 | 36 ± 5 | 2 ± 1 | 71 ± 4 |
| Other | 180 | 56 ± 4 | 42 ± 4 | 3 ± 1 | 58 ± 4 |
| P | .25 | .27 | .73 | .043-150 | |
| Year of transplantation, median | |||||
| Before 1993 | 195 | 60 ± 3 | 39 ± 3 | 2 ± 1 | 65 ± 3 |
| 1993 or later | 192 | 74 ± 9 | 37 ± 4 | 3 ± 1 | 66 ± 4 |
| P | .29 | .65 | .63 | .99 |
P ≤ .05; NA indicates not applicable.