Cohort characteristics at baseline. Chi-square tests and Student t tests for differences between instructor-led and self-directed groups. Some percentages do not add up to 100 because of rounding.
| Characteristics | All Participants | Instructor-led Group | Self-directed Group | p | |||
|---|---|---|---|---|---|---|---|
| Baseline, mean (SD) | |||||||
| PROMIS | 42.8 (6.5) | 42.4 (6.8) | 43.2 (6.2) | 0.1997 | |||
| HAQ | 14.5 (13.7) | 16.2 (15.3) | 13.2 (12.4) | 0.0213* | |||
| Fatigue | 36.8 (28.4) | 37.7 (29.6) | 36.3 (27.5) | 0.5972 | |||
| Stiffness | 37.6 (25.4) | 37.6 (27.4) | 37.6 (23.9) | 0.995 | |||
| Pain | 41.9 (26.8) | 41.0 (27.8) | 42.7 (26.1) | 0.4857 | |||
| Age, yrs, mean (SD) | 66.9 (11.5) | 70.6 (9.9) | 64.4 (11.8) | < 0.0001* | |||
| BMI, kg/m2, mean (SD) | 29.7 (6.8) | 29.3 (6.4) | 30.1 (7.0) | 0.1128 | |||
| Characteristics | n = 462 | % | n = 192 | % | n = 270 | % | p |
| Sex | 0.1715 | ||||||
| Male | 56 | 12 | 28 | 15 | 28 | 10 | |
| Female | 406 | 88 | 164 | 85 | 242 | 90 | |
| Education | 0.0032* | ||||||
| < High school | 21 | 5 | 14 | 7 | 7 | 3 | |
| High school | 105 | 23 | 53 | 28 | 52 | 19 | |
| > High school | 336 | 73 | 125 | 65 | 211 | 78 | |
| Marital status | 0.0986 | ||||||
| Married | 240 | 52 | 91 | 47 | 149 | 55 | |
| Not married | 222 | 48 | 101 | 53 | 121 | 45 | |
| Race/ethnicity | 0.9876 | ||||||
| White | 325 | 70 | 135 | 70 | 190 | 71 | |
| African American | 117 | 25 | 49 | 26 | 68 | 25 | |
| Other | 20 | 4 | 8 | 4 | 12 | 4 | |
↵* Statistical significance at 0.05. PROMIS: Patient-Reported Outcomes Measurement Information System; HAQ: Health Assessment Questionnaire; BMI: body mass index.