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Table 9 Lower Extremity Functional Scale (LEFS): Overall Study Results

From: Prospective study of recovery from copperhead snake envenomation: an observational study

  Pre-Envenomation Day 3 Day 7 Day 14 Day 21 Day 28
  Median Range Median Range Median Range Median Range Median Range Median Range
Score 79 12, 80 17 5, 31 38 8, 80 67.5 23, 80 72 60, 80 80 65, 80
  1. Score on the Lower Extremity Functional Scale (LEFS) outcome measure [17]. The range of possible scores is 0 – 80. Higher scores indicate less disability. Evaluation limited to subjects with lower extremity envenomation (n = 10) except for Day 21 (n = 9). The day of envenomation is Day 0. Use of “look back” questioning to establish pre-injury baseline has not been previously validated for the LEFS.