Pain management
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Aim: 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). ⋯ 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.