Development and validation of a questionnaire (QSPC-Q) for assessment of quality and strengthening of primary care in Brazil.

The performance evaluation of services through instruments is relevant, as it can support thoughts, actions and political approaches to meet a social need. The objective of the article was to develop and validate the Quality and Strengthening of Primary Care Questionnaire (QSPC-Q) for professionals and users based on Starfield attributes and Donabedian pillars. A mixed sequential study was performed to develop the QSPC-Q. The test was applied to 149 doctors and 795 users of basic health units. Psychometric properties was assessed by testing internal consistency using Cronbach's alpha and exploratory factor analysis. Reproducibility od scale was assessed using intraclass cognitive and test-retest correlation. The final version of the follow-up consisted of 45 items aimed at physicians (Cronbach's alpha = 0.921) and 33 at users (Cronbach's alpha = 0.86); the intraclass respiratory capacity was 0.88. An exploratory factor analysis identified 13 factors associated with the pattern components. A short version with 29 items for professionals was also elaborated. Professional QSPC-Q (short and braided versions) and user QSPC-Q were valid.