TABLE 1
bNED at 5 yrs

Factor Total Patients bNED at 5 yrs (%) 95% CI p value
T stage
T1-T2 587 59 52-66 < 0.0001
T3-T4 98 23 13-39 < 0.0001
preRT PSA
<= 4 74 88 77-100 < 0.0001
> 4, <= 10 185 72 59-87 < 0.0001
> 10, <= 20 177 43 30-61 < 0.0001
> 20 203 30 22-42 < 0.0001
Gleason score
2-6 299 61 52-73 < 0.0001
7 156 35 24-51 < 0.0001
8-10 53 34 21-57 < 0.0001
Age
< 70 273 57 49-67 NS
>= 70 413 48 40-58 NS
Race
White 589 53 47-63 NS
Black 97 42 24-74 NS
Total dose (Gy)
< 65 18 70 48-100 < 0.0001
>= 65, < 68 295 58 49-68 < 0.0001
>= 68, <= 69 274 58 49-68 < 0.0001
> 69 99 29 18-46 < 0.0001
Boost technique
Four-field axial 403 58 50-69 0.0961
Six-field axial 190 39 27-56 0.0961
Four-field oblique 64 46 34-62 0.0961
Other 29 56 40-80 0.0961
Pelvic field treated
Yes 465 47 40-55 < 0.0001
No 221 62 51-75 < 0.0001
Favorable
Yes 133 75 57-98 < 0.0001
No 465 37 29-46 < 0.0001
Pelvic field treated
Yes 85 84 72-97 < 0.0001
No 559 43 37-52 < 0.0001

NS = not significant (i.e., in excess of 0.1)
PSA = prostate specific antigen
CI = confidence intervel

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