Table 2 A summary of the follow-up characteristics of the GSTT-AS cohort
Characteristics | Frequency (n = 788) |
|---|---|
No. of years on AS | |
Mean (±SD) | 4.7 (±3.06) |
Median (IQR) | 4.3 (2.5–6.5) |
Number of follow-up biopsies per person | n (%) |
0 | 160 (20.3) |
1 | 361 (45.8) |
2 | 210 (26.7) |
> 3 | 57 (7.2) |
Median time to first follow-up biopsy | Months (95% CI) |
Biopsy follow up time | 13 (11.6–16.7) |
Median time to first follow-up biopsy by diagnostic method | Months (95% CI) |
TP | 26 (25–27) |
TRUS | 6 (5–8) |
Other | 8 (4–20) |
Number of follow-up MRIs per person | n (%) |
0 | 237 (30.1) |
1 | 297 (37.7) |
2 | 153 (19.4) |
> 3 | 101 (12.8) |
Median time to first follow-up MRI | Months (95% CI) |
MRI follow up time | 45 (37–53) |
Median time to first follow-up MRI by diagnostic method | Months (95% CI) |
TP | 52 (33–60) |
TRUS | 43 (36–53) |
Other | 28 (6–63) |