Table 5.
Cancer pain characteristics of participants according to their incident pain status.
| Characteristic | Incident paina | All patients | p value | |
|---|---|---|---|---|
| Absent n = 190 (%) | Present n = 181 (%) | Total n = 371 (%) | ||
| Pain mechanisms and topography | ||||
| Neuropathic component | 42 (22.1) | 78 (43.1) | 120 (32.4) | <0.001 |
| Nociceptive pain | ||||
| Visceral | 66 (34.7) | 46 (25.4) | 112 (30.2) | 0.051 |
| Bone | 66 (34.7) | 83 (45.9) | 149 (40.2) | 0.029 |
| Soft tissue | 103 (54.2) | 115 (63.5) | 218 (58.8) | 0.068 |
| Study-defined breakthrough pain present | 82 (43.2) | 58 (32.0) | 140 (37.7) | 0.027 |
|
| ||||
| Pain duration | ||||
| ≤1 month | 36 (19.0) | 29 (16.0) | 65 (17.5) | 0.459 |
| >1 month | 154 (81.1) | 152 (84.0) | 306 (82.5) | |
|
| ||||
| Principal pain location | ||||
| Upper limb | 19 (10.0) | 20 (11.1) | 39 (10.5) | 0.233 |
| Lower limb | 20 (10.5) | 30 (16.6) | 50 (13.5) | |
| Head and neck | 44 (23.2) | 46 (25.4) | 90 (24.3) | |
| Thorax | 16 (8.4) | 12 (6.6) | 28 (7.6) | |
| Breast | 2 (1.1) | 3 (1.7) | 5 (1.4) | |
| Back | 18 (9.5) | 22 (12.2) | 40 (10.8) | |
| Abdomen | 31 (16.3) | 19 (10.5) | 50 (13.5) | |
| Pelvis and perineum | 24 (12.6) | 23 (12.7) | 47 (12.7) | |
| Multiple sites | 16 (8.4) | 6 (3.3) | 22 (5.9) | |
|
| ||||
| Brief Pain Inventory (BPI) | ||||
| Worst pain | 6.4 ± 3.1 | 8.4 ± 1.4 | 7.4 ± 2.6 | <0.0001 |
| Least pain | 2.5 ± 2.1 | 3.5 ± 1.5 | 3.0 ± 1.9 | <0.0001 |
| Average pain | 4.4 ± 2.2 | 5.5 ± 1.3 | 4.9 ± 1.9 | <0.0001 |
| Pain now | 4.5 ± 3.0 | 6.3 ± 1.8 | 5.4 ± 2.6 | <0.0001 |
| Pain relief | 53.7 ± 32.1 | 35.2 ± 22.2 | 44.7 ± 29.2 | <0.0001 |
|
| ||||
| BPI pain interference | ||||
| General activity | 5.4 ± 2.6 | 5.4 ± 2.6 | 5.4 ± 2.6 | 0.959 |
| Mood | 7.5 ± 2.3 | 7.5 ± 2.6 | 7.5 ± 2.4 | 0.885 |
| Walking | 5.3 ± 2.7 | 5.4 ± 2.5 | 5.3 ± 2.6 | 0.734 |
| Work | 4.3 ± 2.8 | 4.8 ± 3.0 | 4.5 ± 2.9 | 0.127 |
| Relations with people | 2.9 ± 1.8 | 3.0 ± 2.0 | 3.0 ± 1.9 | 0.585 |
| Sleep | 4.7 ± 2.1 | 5.1 ± 1.7 | 4.9 ± 1.9 | 0.087 |
| Enjoyment of life | 7.6 ± 2.4 | 7.3 ± 2.5 | 7.4 ± 2.4 | 0.176 |
aStudy-defined, based on history and on BPI scores.