TABLE 2

Primary Outcomes in Collaborative Care (CC) Versus Usual Care Control (UC) Over Time

Primary OutcomesNet Mean Difference (95% CI) From Baseline in Intervention Compared With Control Group
Baseline Mean (SD)1 Mo3 Mo6 MoEffect Size
CC (n = 25)UC (n = 24)
Symptoms
 Postconcussive symptom youth reporta32.8 (9.0)32.9 (12.9)−2.7 (−9.6 to 4.3)−2.6 (−9.6 to 4.3)−8.2 (−15.2 to −1.2)*0.70
 Postconcussive symptom parent reporta29.9 (12.5)31.4 (11.0)−0.8 (−7.6 to 6.0)−0.5 (−7.3 to 6.3)−2.4 (−9.2 to 4.4)0.20
 Depression youth reportb9.2 (3.9)10.4 (6.7)−0.5 (−3.7 to 2.7)−0.2 (−3.4 to 3.0)−2.9 (−6.1 to 0.3)0.52
 Depression parent reportb7.8 (4.6)8.2 (6.7)−0.2 (−3.2 to 2.8)−0.7 (−3.6 to 2.3)−0.7 (−3.6 to 2.3)0.13
 Anxiety youth reportc48.4 (8.4)53.3 (12.5)3.0 (−2.3 to 8.3)1.9 (−3.4 to 7.2)0.3 (−5.0 to 5.7)−0.04
 Anxiety parent reportc49.0 (10.2)52.8 (10.4)4.1 (−1.9 to 10.1)1.1 (−4.9 to 7.1)−0.5 (−6.5 to 5.6)0.04
Functioning
 Quality of life youth reportd58.5 (13.2)60.4 (15.8)5.4 (−3.5 to 14.3)5.9 (−3.0 to 14.8)9.8 (0.9 to 18.8)*0.63
 Quality of life parent reportd55.9 (18.1)56.8 (17.6)1.2 (−8.0 to 10.4)8.4 (−0.9 to 17.6)13.8 (4.6 to 23.1)*0.86