Qualitative interviews to evaluate content validity of the ACTIV-2 COVID-19 Symptom Diary (ACSD)

Matza LS, Stewart KD, Naegeli AN, Mills KM, Coyne KS, Chew KW, Hughes MD, Smith DM. Qualitative interviews to evaluate content validity of the ACTIV-2 COVID-19 Symptom Diary (ACSD). J Patient Rep Outcomes. 2023 Jan 31;7(1):8. doi: 10.1186/s41687-022-00535-x. PMID: 36719546.


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