Table 1.
Baseline demographics and pain characteristics of the study groups
| Lid:Plac (N=14) | Plac:Lid (N=14) | Total (N=28) | P value | |
|---|---|---|---|---|
| Age | ||||
| N | 14 | 14 | 28 | 0.05 |
| Mean (SD) | 65.0 (6.4) | 58.6 (11.3) | 61.8 (9.5) | |
| Gender | ||||
| Female | 8 (57%) | 11 (79%) | 19 (68%) | 0.22 |
| Male | 6 (42.9%) | 3 (21.4%) | 9 (32.1%) | |
| Race | ||||
| White | 10 (71%) | 9 (64%) | 19 (68%) | 0.79 |
| Black or African American | 3 (21%) | 3 (21%) | 6 (21%) | |
| American Indian or Alaska Native | 1 (7%) | 1 (7%) | 2 (7%) | |
| Unknown: patient unsure | 0 (0%) | 1 (7%) | 1 (4%) | |
| Current analgesic regimen | ||||
| Opioids (includes tramadol) | 2 (14%) | 3 (21%) | 5 (18%) | 0.63 |
| Antidepressants | 1 (7%) | 1 (7%) | 2 (7%) | |
| Anticonvulsants | 0 (0%) | 2 (14%) | 2 (7%) | |
| Combination | 4 (29%) | 4 (29%) | 8 (29%) | |
| Other | 2 (14%) | 2 (14%) | 4 (14%) | |
| None | 5 (36%) | 2 (14%) | 7 (25%) | |
| Duration of pain (months) | ||||
| 1–3 | 3 (21%) | 2 (14%) | 5 (18%) | 0.77 |
| >3–6 | 1 (7%) | 2 (14%) | 3 (11%) | |
| >6 | 10 (71%) | 10 (71%) | 20 (71%) | |
| Etiology of pain | ||||
| Breast surgery | 4 (29%) | 6 (43%) | 10 (36%) | 0.67 |
| Lung surgery | 8 (57%) | 7 (50%) | 15 (54%) | |
| Other | 2 (14%) | 1 (7%) | 3 (11%) | |
| Week 0: worst paina | ||||
| N | 13 | 14 | 27 | 0.27 |
| Mean (SD) | 7.5 (1.9) | 6.5 (2.4) | 7.0 (2.2) | |
| Week 0: least paina | ||||
| Mean (SD) | 2.9 (2.1) | 3.6 (1.6) | 3.3 (1.9) | 0.16 |
| Week 0: average paina | ||||
| Mean (SD) | 4.6 (1.8) | 5.1 (1.9) | 4.9 (1.8) | 0.40 |
| Week 0: pain nowa | ||||
| Mean (SD) | 5.0 (2.7) | 5.1 (2.1) | 5.1 (2.3) | 0.84 |
a
Values from Pain Intensity Rating Scale