Confirmatory factor analysis of the Patient Assessment of Constipation-Symptoms (PAC-SYM) among patients with chronic constipation.

Background and aim: PAC-SYM is widely adopted to asses constipation severity. However, it has been validated in a small sample, few items have been included based on expert opinion and not on empirical grounds, and its factor structure has never been replicated. We aimed at evaluating the psychometric properties of PAC-SYM in patients with chronic constipation. Methods: We enrolled 2,203 outpatients with chronic constipation in two waves. We used wave I sample to test the psychometric properties of the PAC-SYM and wave II sample to cross-validate its factor structure, to assess criterion validity, responsiveness to clinical change, and its minimal clinically important difference. Results: O…

Habitat use and selection, daily rhythm, food intake and predation risk of the invasive grapsoid crab Percnon gibbesi in the Mediterranean Sea

Studio sul controllo di Bactrocera oleae, di funghi agenti di filloptosi e carpoptosi anticipata, e sulle tecniche di propagazione e conservazione in vitro nell'olivicoltura da mensa e da olio in Sicilia

Percorsi verso la singolarità. Studi in onore di Epifania Giambalvo

IL RITORNO DI SISIFO. FORMAZIONE E LAVORO NELLA SOCIETà DELLA CONOSCENZA

IL MITO DELLA CITTADINANZA. ANALISI E PROBLEMI IN PROSPETTIVA PEDAGOGICA.