Validity was assessed using Pearson product moment correlations to examine relationships between the FCCQ and measures of family functioning and factor analysis.
The total score means and standard deviations for HF patient and family versions of the FCCQ and other study scales are in Table 2.
Correlations between the patient and family versions of the FCCQ and the FCCQ-P and measures of family function are in Table 5.
Overall, these correlations of the FCCQ with related family functioning measures support construct validity of both versions of the FCCQ, but are low enough to support the supposition that the FCCQ is indeed measuring a different aspect of family functioning.
An exploratory factor analysis was conducted to determine the factor structure of the scale items for the FCCQ. As part of the factor analysis, an assessment was made to determine that the sample was adequate to conduct a factor analysis for the FCCQ-P and the FCCQ-F.
In general, the preliminary reliability and validity data support the patient and family versions of the FCCQ as having adequate reliability and construct validity.
The construct validity of the FCCQ was supported through relationships with other family function measures.
A complete test of the FCCQ's validity will be important to determine fully the value of this instrument.
The FCCQ adequately reflects the concept of autonomy support provided by the family to patients managing their HF.
However, the usefulness of the FCCQ in clinical practice has not been demonstrated.
One of the intriguing items of the FCCQ is the item indicating that family members are disappointed in the HF patient for not following recommended lifestyle changes.
Research using the FCCQ is underway to determine if creating a supportive environment is associated with improving sustained adherence to lifestyle changes associated with HF.