Validating a tool to measure spiritual beliefs, needs and resources in serious illness: The I-SPIRIT

Seriously ill patients rely on spiritual and existential beliefs to support coping and approach crucial treatment and healthcare decisions. Yet, we lack gold standard, validated approaches to gathering information on those spiritual beliefs. Therefore, we developed I-SPIRIT, a spiritual needs and beliefs inventory for those with serious illness (IIR-10-050).

In prior work to develop measure content, we interviewed a total of 74 participants: 20 patients (veterans with Stage IV cancer, CHF, COPD, ESRD), 19 caregivers, 14 chaplains, 10 social workers, 12 nurses, and 5 physicians. Using directed content analyses, we identified over 50 attributes of spiritual experience comprising five domains: overall importance of spirituality; affiliations and practices; impact on decisions; spiritual needs; and spiritual resources. We then translated these attributes into individual items with Likert response scales. In the quantitative validation of I-SPIRIT, we administered the instrument and a battery of comparison measures to 249 seriously ill veterans. The comparison measures captured general spiritual well-being, religious coping, and emotional functioning. Convergent and discriminant validity was examined with the FACIT-sp (faith, meaning, and purpose), BMMRS (religious/spirituality), POMS and PHQ-8 (emotional function), and FACT-G (quality of life). We administered the I-SPIRIT a week later, for test-retest reliability.

Psychometric analyses yielded a final I-SPIRIT Tool including 30 items. Results demonstrated reliability and validity and yielded a tool with three main components: Spiritual Beliefs (seven items); Spiritual Needs (nine items); and Spiritual Resources (14 items). The Spiritual Beliefs items include key practices and affiliations, and impact of beliefs on healthcare. Higher levels of Spiritual Needs were associated with higher anxiety and depression.

The I-Spirit measures relevance of spirituality, spiritual needs and spiritual resources and demonstrates validity, reliability, and acceptability for patients with serious illness.