Table 2.
Univariable analyses of selected variables.
| Variable | Controls (n = 1080) n (%) | Patient (n = 217) n (%) | Positive likelihood ratio (95% CI) |
|---|---|---|---|
| Symptoms: | |||
| Urinary retention | 33 (15.2) | 18 (1.7) | 9.1 (5.2 to 16) |
| Hesitancy | 37 (17.1) | 21 (1.9) | 8.8 (5.2 to15) |
| Impotence | 67 (30.9) | 38 (3.5) | 8.8 (6.1 to 13) |
| Frequency | 102 (47.0) | 77 (7.1) | 6.6 (5.1 to 8.5) |
| Nocturia | 63 (29.0) | 49 (4.5) | 6.4 (4.5 to 9.0) |
| Haematuria | 33 (15.2) | 54 (5.0) | 3.0 (2.0 to 4.6) |
| First presentation, weight loss | 21 (9.7) | 48 (4.4) | 2.2 (1.3 to 3.6) |
| Second presentation, weight loss | 11 (5.0) | 9 (0.83) | 6.1 (2.6 to 15) |
| Examination findings: | |||
| Rectal examination deemed benign enlargement | 61 (28.1) | 37 (3.4) | 8.2 (5.6 to 12) |
| Rectal examination deemed malignant enlargement | 41 (18.9) | 5 (0.5) | 41 (16 to 100) |
| Investigations: | |||
| PSA >4 ng/ml | 132 (60.8) | 23 (2.1) | 29 (19 to 43) |
| PSA >2 ng/ml | 133 (61.3) | 35 (3.2) | 19 (13 to 27) |
All the variables were more common in cases: P-values <0.001 for all except for the first presentation with loss of weight, with P = 0.002 (conditional logistric regression).