Psychosocial Moderators and Outcomes of a Randomized Effectiveness Trial for Child Asthma.

OBJECTIVE: Psychosocial factors play a role in child asthma morbidity and disparities, but their impact on asthma intervention effectiveness is less understood. This study examined how child, parent, and family psychosocial factors moderated asthma response to, and changed in response to, 2 community asthma interventions among urban minority youth.

METHODS: Asthma Action at Erie was a randomized comparative effectiveness trial examining a community health worker (CHW) home intervention versus certified asthma educator (AE-C) services for children aged 5-16 with uncontrolled asthma (N = 223; mean age = 9.37, SD = 3.02; 85.2% Hispanic). Asthma control was assessed via the Asthma Control Test (ACT)/childhood ACT and activity limitation. Baseline child/parent depression and posttraumatic stress disorder (PTSD) symptoms, family chaos, and social support were examined as treatment moderators. We also tested intervention effects on psychosocial outcomes.

RESULTS: For parents with higher baseline depression symptoms, youth in the CHW group had greater ACT improvement by 24 months (7.49 points) versus AE-C (4.76 points) and 51% reduction in days of limitation by 6 months versus AE-C (ß = -0.118; p = .0145). For higher parent PTSD symptoms, youth in CHW had 68% fewer days of limitation at 24 months versus AE-C (ß = -0.091; p = .0102). Psychosocial outcomes did not vary by group, but parent depression, parent and child PTSD symptoms, and social support improved for all.

CONCLUSIONS: CHW intervention was associated with improved asthma control among families with higher parent strain. Findings have implications for utilizing tailored CHW home interventions to optimize asthma outcomes in at-risk families.