Assessment of primary care in health surveys: a population perspective

Background: The objective of this study was to evaluate the metric properties of a selection of items of the Primary Care Assessment Tool (PCAT) included into 2006 Catalonia Health Survey and adapted to evaluate experiences of primary care (PC) under population perspective. Methods: This was a cross-sectional study. The study population was composed of non-institutionalized residents of Catalonia over 15 years of age (n = 12 933). The instrument used was a 10-item selection of the adult user's version of the PCAT (PCAT10-AE). We assessed internal consistency, correlation between items and performed exploratory factor analysis and external validity analysis. Results: The instrument presented adequate internal consistency (0.72). All items showed acceptable correlation with other items that constitute the scale. The single extracted factor explained 64% of the common variance in the responses, allowing the construction of a global index for evaluation of PC. We observed an association between better evaluation of PC and more satisfaction with the health system. Conclusions: Metric analysis supported the integrity and general adequacy of this very short tool included in a population health survey. The global index proposed could be a good measure for assessing and monitoring the adequacy of part of the PC experiences in first-contact care and person-focused care over time, under population perspective. On the other hand, the loss of content as a consequence of the selection of items, suggesting use of the expanded versions of the PCAT-AE whenever a global evaluation of PC is desired and it is possible.