Table 1.
Characteristic | Non-user (n = 3,651) |
ADT user (n = 1,685) |
p | ||
---|---|---|---|---|---|
No. of patients | % | No. of patients | % | ||
Age at diagnosis in years | |||||
Mean (SD) | 65 (7) | 68 (7) | |||
Race/ethnicity | |||||
Non-Hispanic White | 1,803 | 49 | 879 | 52 | |
Hispanic | 648 | 18 | 258 | 15 | |
Non-Hispanic black | 822 | 23 | 356 | 21 | |
All others or unknown | 378 | 10 | 192 | 12 | 0.05 |
Year of diagnosis | |||||
1995–2000 | 628 | 17 | 449 | 27 | |
2001–2005 | 1,508 | 41 | 739 | 43 | |
2006–2011 | 1,515 | 42 | 497 | 29 | < 0.001 |
AUA risk groupa | |||||
Low | 1,134 | 31 | 261 | 15 | |
Intermediate | 1,240 | 34 | 657 | 39 | |
High | 1,277 | 35 | 767 | 46 | < 0.001 |
Primary treatment | |||||
Radical prostatectomy | 1,662 | 46 | 366 | 22 | |
Radiation therapy | 1,989 | 54 | 1,319 | 78 | < 0.001 |
Comorbidity count (Elixhauser index, 2 years before diagnosis date) | |||||
1 | 3,155 | 87 | 1,412 | 84 | |
2 | 328 | 9 | 178 | 11 | |
≥ 3 | 13 | 0 | 7 | 0 | |
Unknown/missing | 155 | 4 | 88 | 5 | 0.138 |
Ever use of antidiabetic drugs | |||||
Never | 884 | 24 | 310 | 18 | |
Ever | 2,767 | 76 | 1,375 | 82 | < 0.001 |
Antidiabetic drug type | |||||
None | 884 | 24 | 310 | 18 | |
Oral only | 2,149 | 59 | 928 | 55 | |
Insulin | 618 | 17 | 447 | 27 | < 0.001 |
ADT type | |||||
Adjuvant ADT only | 1,100 | 65 | |||
Salvage ADT only | 388 | 23 | |||
Adjuvant & salvage ADT | 197 | 12 |
‡Risk group is defined as low (pre-treatment PSA level 10 ng/mL, Gleason score 6, and a clinical tumor stage of T2a), intermediate (10 ng/mL PSA 20 ng/mL, Gleason score of 7, or T2b), or high (PSA 20 ng/mL, Gleason score 8–10, or T2c–T3a)