Table 2.
Characteristics of STAART participants, overall and by arm.
| Characteristic | Total sample mean ± SD or N (%) | Pain CST mean ± SD or N (%) | WL control mean ± SD or N (%) |
|---|---|---|---|
| Demographic and clinical characteristics | |||
| Age | 59.0 ± 10.3 | 59.2 ± 9.8 | 58.9 ± 10.9 |
| Female | 122 (49.2%) | 61 (49.2%) | 61 (49.2%) |
| Hispanic | 7 (2.9%) | 3 (2.5%) | 4 (3.3%) |
| Some education above high school | 187 (75.4%) | 92 (74.2%) | 95 (76.6%) |
| Working | 86 (34.7%) | 43 (34.7%) | 43 (34.7%) |
| Married or living with partner | 103 (41.5%) | 51 (41.1%) | 52 (41.9%) |
| Low perceived income* | 83 (33.6%) | 48 (38.7%) | 35 (28.5%) |
| Body mass index (kg/ms) | 35.2 ± 8.2 | 35.6 ± 8.4 | 34.8 ± 7.9 |
| No. of self-reported comorbidities | 8.5 ± 3.9 | 8.2 ± 3.9 | 8.8 ± 4.0 |
| Duration of arthritis symptoms | 13.0 ± 10.0 | 12.4 ± 9.6 | 13.6 ± 10.3 |
| Primary and secondary outcomes | |||
| WOMAC pain | 11.0 ± 3.9 | 11.2 ± 4 | 10.8 ± 3.8 |
| WOMAC total | 53.0 ± 17.8 | 52.9 ± 16.4 | 53.0 ± 19.1 |
| WOMAC function | 37.0 ± 13.2 | 37.1 ± 12.2 | 36.9 ± 14.2 |
| PROMIS Pain Interference Score | 63.8 ± 6.9 | 64.0 ± 6.3 | 63.5 ± 7.5 |
| Short-Form-12—physical | 33.1 ± 9.1 | 33.1 ± 8.9 | 33.0 ± 9.2 |
| Short-Form-12—mental | 50.7 ± 11.1 | 51.0 ± 10.4 | 50.4 ± 11.8 |
| CSQ—total coping attempts | 93.9 ± 36.6 | 94.3 ± 37.5 | 93.5 ± 35.9 |
| Pain Catastrophizing Scale | 19.8 ± 12.3 | 19.9 ± 12.8 | 19.6 ± 11.8 |
| PHQ-8 | 6.2 ± 5.3 | 6.0 ± 5.1 | 6.4 ± 5.6 |
| Arthritis Self-Efficacy Scale | 5.9 ± 2.0 | 5.6 ± 1.9 | 5.8 ± 2.0 |
| Yale Physical Activity Scale | 4020.1 ± 3472.5 | 4318.0 ± 3905.5 | 3725.1 ± 2971.9 |
*
Self-report of “just meet basic expenses” or “don’t even have enough to meet basic expenses.”
CSQ, Coping Strategies Questionnaire; CST, coping skills training.; DVAHCS, Durham VA Health Care System; PHQ, Patient Health Questionnaire; UNC, University of North Carolina; WL, wait list; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index.