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- Bernard Schachtel, Adam B Smith, and Adrian Shephard.
- Schachtel Research Company Inc., Jupiter, FL 33477, USA.
- Pain Manag. 2020 Jul 1; 10 (4): 247-252.
AbstractAim: The Qualities of Sore Throat Index (QuaSTI) assesses the status of patient-reported pharyngeal pain. One study used QuaSTI in isolation; a separate study used QuaSTI plus the Sore Throat Scale (STS). Both studies also used a Sore Throat Pain Intensity Scale (STPIS). This study evaluates STS and STPIS as instruments to refine the QuaSTI. Materials & methods: Correlational analysis determined the degree of association between STPIS and STS. Confirmatory factor analyses evaluated the proposed factor structure of QuaSTI. Results: A strong correlation between STS and STPIS (r = 0.91; p < 0.01), supports the use of STS in QuaSTI. Analyses confirm a three-factor structure for the 10-item QuaSTI and validate inclusion of an additional item to create an 11-item tool for measuring pharyngeal pain. Conclusion: The QuaSTI represents a robust and validated tool for measuring therapeutic effects in patients with pharyngitis.
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