Table II.
Descriptive Statistics for Outcome and Process Variables as a Function of Group and Assessment Time Point
| Variable | Baseline |
Posttreatment |
6-month follow-up |
12-month follow-up |
||||
|---|---|---|---|---|---|---|---|---|
| Treatment | Control | Treatment | Control | Treatment | Control | Treatment | Control | |
| Primary outcomes | ||||||||
| Pain intensity NRS | 3.6 ± 2.3 | 3.3 ± 2.4 | 3.1 ± 2.5 | 2.9 ± 2.5 | 2.9 ± 2.5 | 3.0 ± 2.3 | 3.1 ± 2.5 | 2.7 ± 2.4 |
| (0–9) | (0–9) | (0–9) | (0–10) | (0–8) | (0–8) | (0–10) | (0–9) | |
| Pain interference NRS | 2.6 ± 2.3 | 2.5 ± 2.3 | 2.2 ± 2.4 | 1.7 ± 2.2 | 2.20 ± 2.2 | 1.8 ± 2.0 | 2.0 ± 2.2 | 1.9 ± 2.2 |
| (0–9.8) | (0–9.4) | (0–9.6) | (0–9.4) | (0–8.6) | (0–10) | (0–8.6) | (0–7.4) | |
| PedsQL rheumatology | 72.6 ± 15.6 | 72.4 ± 15.8 | 75.7 ± 16.2 | 77.8 ± 16.2 | 77.3 ± 15.6 | 77.1 ± 14.4 | 78.3 ± 16.2 | 78.0 ± 14.3 |
| (34.1–100) | (17.0–98.9) | (34.1–100) | (34.1–100) | (43.2–100) | (37.5–100) | (42.0–100) | (43.2–100) | |
| Process variables | ||||||||
| CASE self-efficacy | 3.3 ± 1.0 | 3.3 ± 1.0 | 3.8 ± 1.0 | 3.7 ± .9 | 3.8 ± 1.0 | 3.7 ± .9 | 3.8 ± 1.0 | 3.8 ± 1.0 |
| (1.0–5.0) | (1.1–5.0) | (1.8–5.0) | (1.0–5.0) | (1.4–5.0) | (1.0–5.0) | (1.0–5.0) | (1.0–5.0) | |
| PCQ—approach coping | 2.6 ± .7 | 2.6 ± .7 | 2.8 ± .9 | 2.7 ± .8 | 2.8 ± .9 | 2.5 ± .9 | 3.8 ± 1.0 | 2.5 ± .9 |
| (1.0–5.0) | (1.0–4.7) | (1.0–4.6) | (1.0–5.0) | (1.0–5.0) | (1.0–4.9) | (1.0–5.0) | (1.0–5.0) | |
| PCQ—emotion-focused avoidance coping | 2.1 ± .8 | 2.0 ± .8 | 2.0 ± .8 | 1.9 ± .8 | 1.9 ± .8 | 1.9 ± .8 | 2.0 ± .9 | 1.9 ± .8 |
| (1.0–4.5) | (1.0–5.0) | (1.0–5.0) | (1.0–4.5) | (1.0–4.5) | (1.0–4.5) | (1.0–5.0) | (1.0–5.0) | |
| PROMIS pediatric anxiety | 48.6 ± 11.8 | 47.6 ± 10.7 | 46.8 ± 11.3 | 45.5 ± 11.0 | 45.1 ± 12.1 | 46.0 ± 10.8 | 45.3 ± 12.0 | 46.0 ± 11.4 |
| (33.5–71.8) | (33.5–81.1) | (33.5–70.6) | (33.5–70.6) | (33.5–76.0) | (33.5–83.3) | (33.5–70.6) | (33.5–79.3) | |
| PROMIS pediatric depression | 47.2 ± 11.6 | 46.5 ± 11.7 | 46.4 ± 11.2 | 45.2 ± 12.1 | 45.6 ± 11.2 | 45.1 ± 11.4 | 45.5 ± 11.0 | 45.0 ± 11.4 |
| (35.2–82.4) | (35.2–82.4) | (35.2–82.4) | (35.2–76.5) | (35.2–82.4) | (35.2–82.4) | (35.2–82.4) | (35.2–79.9) | |
| MEPS disease knowledge | 4.8 ± 2.0 | 4.6 ± 2.3 | 6.3 ± 2.0 | 6.5 ± 2.3 | 6.6 ± 2.4 | 6.4 ± 2.5 | 6.5 ± 2.3 | 6.6 ± 2.6 |
| (0.5–10) | (0.4–10) | (0–10) | (0–10) | (0–10) | (0–10) | (0–10) | (0–10) | |
Note. Values shown are M values ± SDs (score range). Treatment = Teens Taking Charge online self-management condition; control = online disease education condition. CASE = Children’s Arthritis Self-Efficacy Scale; HRQOL = health-related quality of life; MEPS = Medical Issues, Exercise, Pain and Social Support Questionnaire; NRS = Numeric Rating Scale; PCQ = Pain Coping Questionnaire; PedsQL = Pediatric Quality of Life Scale; PROMIS = Patient-Reported Outcomes Measurement Information System.