Table 1.

Logistic regression model of biopsy upgrading for active surveillance patients who were diagnosed after 1995 and underwent treatment (n = 237)

CovariateCoefficientORStandard errorP value
Intercept−7.910.001.99<0.001
Age at diagnosis0.101.110.03<0.001
PSA at diagnosis0.011.010.050.821
Time to treatment (yrs)0.211.230.080.008
Annual change of PSA0.061.060.070.372