biostudies-literatureUnknown13(12)Theophanous RGOBJECTIVES:Although more than 1.8 million people survive snakebite envenomation each year, their recovery is understudied. Obtaining long-term follow-up is challenging in both high- and low-resource settings. The Patient-Specific Functional Scale (PSFS) is an easily administered, well-accepted patient-reported outcome that is validated for assessing limb recovery from snakebite envenomation. We studied whether the PSFS is valid and reliable when administered by telephone. METHODS:This is a secondary analysis of data from a randomized clinical trial. We analyzed the results of PSFS collected in-person on days 3, 7, 14, 21, and 28 and by telephone on days 10, 17, and 24. We assessed the following scale psychometric properties: (a) content validity (ceiling and floor effects), (b) internal stPLoS neglected tropical diseasese0007935https://www.ebi.ac.uk/biostudies/studies/S-EPMC6934321biostudies-literatureValidity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation.PMC6934321Griffin SMSchwartz RGreene SCKleinschmidt KCharlton NPAnderson VEToschlog EALavonas EJGerardo CJSharma KBush SPBrandehoff NPTheophanous RGWen FHQuackenbush EBVissoci JRNRose SRLewis BMullins MEfalseValidity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation.OBJECTIVES:Although more than 1.8 million people survive snakebite envenomation each year, their recovery is understudied. Obtaining long-term follow-up is challenging in both high- and low-resource settings. The Patient-Specific Functional Scale (PSFS) is an easily administered, well-accepted patient-reported outcome that is validated for assessing limb recovery from snakebite envenomation. We studied whether the PSFS is valid and reliable when administered by telephone. METHODS:This is a secondary analysis of data from a randomized clinical trial. We analyzed the results of PSFS collected in-person on days 3, 7, 14, 21, and 28 and by telephone on days 10, 17, and 24. We assessed the following scale psychometric properties: (a) content validity (ceiling and floor effects), (b) internal st2019-01-01T00:00:00Z2019 Dec2025-04-04T13:36:17.241Z2020-05-22T07:14:18ZS-EPMC69343213183492310.1371/journal.pntd.0007935