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Validity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation.

Publication ,  Journal Article
Theophanous, RG; Vissoci, JRN; Wen, FH; Griffin, SM; Anderson, VE; Mullins, ME; Brandehoff, NP; Quackenbush, EB; Bush, SP; Toschlog, EA ...
Published in: PLoS Negl Trop Dis
December 2019

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 structure and consistency (Cronbach's alpha), and (c) temporal and external validity using Intraclass Correlation Coefficient (ICC). Temporal stability was assessed using Spearman's correlation coefficient and agreement between adjacent in-person and telephonic assessments with Cohen's kappa. Bland Altman analysis was used to assess differential bias in low and high score results. RESULTS: Data from 74 patients were available for analysis. Floor effects were seen in the early post-injury time points (median: 3 (IQR: 0, 5) at 3 days post-enrollment) and ceiling effects in the late time points (median: 9 (IQR: 8, 10). Internal consistency was good to excellent with both in-person (Cronbach α: 0.91 (95%CI 0.88, 0.95)) and telephone administration (0.81 (0.73, 0.89). Temporal stability was also good (ICC: 0.83 (0.72, 0.89) in-person, 0.80 (0.68, 0.88) telephone). A strong linear correlation was found between in-person and telephone administration (Spearman's ρ: 0.83 (CI: 0.78, 0.84), consistency was assessed as excellent (Cohen's κ 0.81 (CI: 0.78, 0.84), and Bland Altman analysis showed no systematic bias. CONCLUSIONS: Telephone administration of the PSFS provides valid, reliable, and consistent data for the assessment of recovery from snakebite envenomation.

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Published In

PLoS Negl Trop Dis

DOI

EISSN

1935-2735

Publication Date

December 2019

Volume

13

Issue

12

Start / End Page

e0007935

Location

United States

Related Subject Headings

  • Young Adult
  • Tropical Medicine
  • Treatment Outcome
  • Snake Bites
  • Reproducibility of Results
  • Middle Aged
  • Male
  • Interviews as Topic
  • Humans
  • Follow-Up Studies
 

Citation

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Theophanous, R. G., Vissoci, J. R. N., Wen, F. H., Griffin, S. M., Anderson, V. E., Mullins, M. E., … Gerardo, C. J. (2019). Validity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation. PLoS Negl Trop Dis, 13(12), e0007935. https://doi.org/10.1371/journal.pntd.0007935
Theophanous, Rebecca G., Joao Ricardo Nickenig Vissoci, Fan Hui Wen, S Michelle Griffin, Victoria E. Anderson, Michael E. Mullins, Nicklaus P. Brandehoff, et al. “Validity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation.PLoS Negl Trop Dis 13, no. 12 (December 2019): e0007935. https://doi.org/10.1371/journal.pntd.0007935.
Theophanous RG, Vissoci JRN, Wen FH, Griffin SM, Anderson VE, Mullins ME, et al. Validity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation. PLoS Negl Trop Dis. 2019 Dec;13(12):e0007935.
Theophanous, Rebecca G., et al. “Validity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation.PLoS Negl Trop Dis, vol. 13, no. 12, Dec. 2019, p. e0007935. Pubmed, doi:10.1371/journal.pntd.0007935.
Theophanous RG, Vissoci JRN, Wen FH, Griffin SM, Anderson VE, Mullins ME, Brandehoff NP, Quackenbush EB, Bush SP, Toschlog EA, Greene SC, Sharma K, Kleinschmidt K, Charlton NP, Rose SR, Schwartz R, Lewis B, Lavonas EJ, Gerardo CJ. Validity and reliability of telephone administration of the patient-specific functional scale for the assessment of recovery from snakebite envenomation. PLoS Negl Trop Dis. 2019 Dec;13(12):e0007935.

Published In

PLoS Negl Trop Dis

DOI

EISSN

1935-2735

Publication Date

December 2019

Volume

13

Issue

12

Start / End Page

e0007935

Location

United States

Related Subject Headings

  • Young Adult
  • Tropical Medicine
  • Treatment Outcome
  • Snake Bites
  • Reproducibility of Results
  • Middle Aged
  • Male
  • Interviews as Topic
  • Humans
  • Follow-Up Studies