<p><strong>OBJECTIVE: </strong>Spiritual and religious (S/R) coping is a relevant yet understudied domain of coping among caregivers of children undergoing hematopoietic stem cell transplantation (HCT). The aims of this manuscript are to: 1) conduct the first psychometric evaluation of the Brief RCOPE in this population; 2) examine levels of and changes in S/R coping over time; and 3) explore the relationship between S/R coping trajectories and psychological functioning post-HCT.</p>

<p><strong>METHODS: </strong>Caregivers (n=170) of children (ages ≤12 years, n=170) undergoing HCT completed the Brief RCOPE and the Brief Symptom Inventory (BSI) pre- and at multiple time points post-HCT discharge. Factor structure, internal consistency, and validity were examined. Growth mixture models were used to identify subgroups with similar S/R coping trajectories, with group memberships added to mixture models to explore relationships between group membership and caregiver psychological functioning trajectories.</p>

<p><strong>RESULTS: </strong>The Brief RCOPE exhibited the previously-supported two factor structure and each subscale demonstrated strong internal consistency (α=.85 and .92). Validity was supported by significant correlations with BSI scores. There were distinct subgroups of caregivers with different patterns of positive (n=4 subgroups) and negative (n=3 subgroups) S/R coping, with negative coping subgroup membership predicting changes in psychological functioning.</p>

<p><strong>CONCLUSIONS: </strong>The Brief RCOPE is a promising measure for assessing S/R coping among caregivers of children undergoing HCT and has the potential to identify caregivers at risk for poorer long-term psychological functioning. This article is protected by copyright. All rights reserved.</p>

<p><strong>OBJECTIVE&nbsp;: </strong>Develop and evaluate the preliminary validity of a self-report measure of parents' treatment-related efficacy and control, Parental Efficacy and Control Questionnaire-Hematopoietic Stem Cell Transplant (PECQ-HCT), in a pediatric HCT sample.</p>

<p><strong>METHODS&nbsp;: </strong>Participants included 185 parents of children (≤12 years old) receiving HCT participating in a larger, longitudinal study. Parents completed the PECQ-HCT as well as measures of social problem-solving skills, collective family efficacy, family beliefs, and parental distress.</p>

<p><strong>RESULTS&nbsp;: </strong>Exploratory factor analysis results indicated that a 37-item four-factor model was the best fitting and most theoretically sound, χ2(df = 1,596) = 14,089.95, p &lt; .01, comparative fit index = 0.92, Tucker-Lewis Index = 0.90, and root mean square error of approximation = 0.07. Preliminary subscale scores demonstrated adequate internal consistency as well as good content and criterion-related validity.</p>

<p><strong>CONCLUSIONS&nbsp;: </strong>If replicated using a confirmatory factor analysis in a separate sample, these findings suggest that the four-factor PECQ-HCT measure may be useful for measuring HCT-related parental efficacy and perceived control.</p>