Table 3.
Associations of Psychological and Decision-Making Variables with Treatment Preference
| Variable | Categories | All (n=1140) | Active Treatment (AT) (n=353, 31%) | Active Surveillance (AS) (n=448, 39%) | No Preference (NP) (n=339, 30%) | Significance AS/ AT/NP a AS and AT b AT and NP c AS and NP d |
|---|---|---|---|---|---|---|
|
Knowledge Scale Mean (SD) (higher = more knowledge) |
continuous | 3.51 (0.84) | 3.39 (0.84) | 3.61 (0.81) | 3.49 (0.86) | 0.001 a |
| 0.0002 b | ||||||
| 0.123 c | ||||||
| 0.048 d | ||||||
|
SURE scale: Certainty of treatment preference (higher = more certain) Mean (SD) |
continuous | 3.17 (1.18) | 3.76 (0.63) | 3.54 (0.87) | 2.07 (1.23) | <.0001 a |
| <.0001 b | ||||||
| <.0001 c | ||||||
| <.0001 d | ||||||
|
Health Worry Scale: Prostate-related anxiety (higher = more anxious) Mean (SD) |
continuous | 10.62 (4.44) | 10.17 (4.4) | 10.77 (4.39) | 10.91(4.52) | 0.060 a |
| 0.054 b | ||||||
| 0.029 c | ||||||
| 0.663 d | ||||||
| Degner Control Preference Scale (N, %) | Prefers shared decision | 243 (21.7) | 37 (10.5) | 115 (26.3) | 91 (27.6) | <.0001 a |
| Prefers to make decision after considering doctor's opinion | 718 (64.2) | 237 (67.5) | 262 (60) | 219 (66.4) | <.0001 b | |
| <.0001 c | ||||||
| Prefers to make an independent decision | 157 (14) | 77 (21.9) | 60 (13.7) | 20 (6.1) | 0.003 d | |
|
Aware of low risk status
(N, %) |
Incorrect/don't know | 117 (10.4) | 52 (14.9) | 25 (5.7) | 40 (12) | <.0001 a |
| <.0001 b | ||||||
| Correct (low risk) | 1004 (89.6) | 296 (85.1) | 416 (94.3) | 292 (88) | 0.270 c | |
| 0.002 d | ||||||
|
Numeracy (N, %) |
0 correct | 221 (20.5) | 63 (18.3) | 90 (21.5) | 68 (21.4) | 0.409 a |
| 1 correct | 337 (31.2) | 119 (34.6) | 129 (30.9) | 89 (28) | 0.409 b 0.173 c |
|
| 2 correct | 522 (48.3) | 162 (47.1) | 199 (47.6) | 161 (50.6) | 0.659 d | |
* Percentages may not add up to 100 due to missing values