Table 1. Baseline Characteristics of the 250 Participants in the SCAMP Trial.
| Baseline Patient Characteristic | Intervention Group (N=123) | Usual Care Group (N=127) | P Value |
|---|---|---|---|
| Mean (SD) age, yr | 55.2 (12.6) | 55.8 (11.1) | .70 |
| Women, n (%) | 69 (56) | 63 (50) | .30 |
| Race, n (%) | .29 | ||
| White | 75 (61) | 76 (60) | |
| Black | 42 (34) | 49 (39) | |
| Other | 6 (5) | 2 (2) | |
| Education, n (%) | .65 | ||
| Less than High school | 28 (23) | 32 (25) | |
| High school | 54 (44) | 48 (38) | |
| At least some college or trade school | 41 (33) | 46 (37) | |
| Married, n (%) | 48 (39) | 44 (35) | .47 |
| Employment status, n (%) | .35 | ||
| Employed | 36 (29) | 28 (22) | |
| Unemployed or unable to work | 39 (32) | 40 (32) | |
| Retired | 48 (39) | 59 (47) | |
| Pain location, n (%) | .66 | ||
| Back | 76 (62) | 75 (59) | |
| Hip or knee | 47 (38) | 52 (41) | |
| Clinical site, n (%) | .96 | ||
| Veteran administration (VA) | 50 (41) | 52 (41) | |
| University clinics | 73 (59) | 75 (59) | |
| Median duration of pain, yr (interquartile range) * | 8 (3-21) | 10 (4-20) | .81 |
| Mean (SD) no. of medical diseases | 2.7 (1.6) | 2.7 (1.4) | .62 |
| Baseline medications, n (%) † | |||
| Opioid analgesics | 63 (52) | 49 (42) | .12 |
| Non-opioid analgesics | 88 (72) | 85 (72) | .99 |
| Tricyclic (TCA) antidepressants | 29 (24) | 16 (14) | .04 |
| Non-TCA antidepressants | 28 (23) | 17 (14) | .09 |
| Nonpharmacological treatments for pain | 31 (25) | 28 (22) | .56 |
| Have seen mental health specialist | 51 (41) | 59 (46) | .43 |
*
Middle 50% range of values, i.e., difference between 1st and 3rd quartiles (25th-75th percentiles)
†
Baseline medication data was available for 122 (99%) of stepped care and 118 (93%) of usual care subjects. These numbers were used as the denominators for calculating the proportion of patients on various medications.