Table 2. Outcomes for Collaborative Care vs Usual Care Groups Over the 12 Study Months.
| Outcomes | Score range | Baseline score, mean (SD) | Net difference from baseline between collaborative care and usual care, mean (95% CI)a | |||
|---|---|---|---|---|---|---|
| Collaborative care (n = 101) | Usual care (n = 99) | 3 mo | 6 mo | 12 mo | ||
| Primary, adolescent report | ||||||
| Postconcussive symptomsb | 0 to 60 | 30.9 (11.1) | 31.1 (11.8) | −3.4 (−6.6 to −0.1)c | −3.0 (−6.4 to 0.3) | −4.1 (−7.7 to −0.4)c |
| Quality of lifed | 0 to 100 | 66.5 (15.5) | 66.6 (15.2) | 1.7 (−2.3 to 5.6) | 2.8 (−1.3 to 6.8) | 4.7 (0.05 to 9.3)c |
| Depressive symptomse | 0 to 27 | 9.4 (5.8) | 10.0 (5.8) | −0.3 (−1.8 to 1.1) | −0.2 (−1.6 to 1.2) | −1.1 (−2.7 to 0.5) |
| Anxiety symptomsf | 0 to 21 | 6.8 (4.8) | 7.7 (5.4) | −0.6 (−1.8 to 0.6) | −0.7 (−2.0 to 0.5) | −0.8 (−2.3 to 0.7) |
| Anxiety symptomsg | 0 to 45 | 8.2 (6.7) | 8.6 (6.9) | −0.9 (−2.4 to 0.6) | −0.9 (−2.3 to 0.6) | −1.7 (−3.4 to 0.1) |
| Secondary, parent report | ||||||
| Postconcussive symptomsb | 0 to 60 | 27.1 (11.6) | 28.2 (12.5) | 1.8 (−1.1 to 4.8) | −1.3 (−4.5 to 1.9) | −0.7 (−4.0 to 2.5) |
| Quality of lifed | 0 to 100 | 65.7 (16.2) | 63.8 (15.6) | −3.0 (−7.5 to 1.4) | −1.2 (−5.6 to 3.2 | −1.5 (−6.1 to 3.1) |
| Depressive symptomse | 0 to 27 | 7.4 (5.0) | 7.7 (4.9) | 0.1 (−1.3 to 1.5) | 0.2 (−1.2 to 1.6) | −0.05 (−1.5 to 1.4) |
| Anxiety symptomsf | 0 to 45 | 4.7 (3.7) | 5.7 (4.2) | 0.3 (−0.8 to 1.3) | 0.04 (−1.0 to 1.1) | 0.4 (−0.7 to 1.6) |
| Other, adolescent report | ||||||
| Sleep qualityh | 1 to 6 | 3.8 (0.8) | 3.9 (0.9) | 0.3 (0.2 to 0.5)c | 0.2 (0.04 to 0.5)c | 0.4 (0.2 to 0.6)c |
| Headache paini | 38.9 to 72.6 | 57.6 (5.0) | 58.3 (5.0) | 0.2 (−1.9 to 2.3) | −0.4 (−2.6 to 1.8) | −1.6 (−3.9 to 0.7) |
a
Means were derived from mixed-effect models and are adjusted for gender, age, and time elapsed since the concussion injury event.
b
Determined by responses to the Health Behavior Inventory.
c
Differences between groups are statistically significant (P < .05).
d
Determined by responses to the Pediatric Quality of Life Inventory.
e
Determined by responses to the Patient Health Questionnaire–9.
f
Determined by responses to the Generalized Anxiety Disorder 7-item Scale.
g
Determined by responses to the Revised Child Anxiety and Depression Scale-Short Version (anxiety subscale).
h
Determined by responses to the Adolescent Sleep Wake Scale.
i
Determined by responses to the Traumatic Brain Injury-Quality of Life Headache Pain.