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Thresholds

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Newsletter Articles
Guides Newsletter (2002) 7 (2): 7–10.
Published: 01 March 2002
...Christopher R. Brigham, MD Workers’ compensation jurisdictions use the AMA Guides to the Evaluation of Permanent Impairment ( AMA Guides ), in various ways, including as a proxy for disability, either as a direct correlate or as a threshold indicator. The AMA Guides clearly states that it should...
Newsletter Articles
Guides Newsletter (2020) 25 (6): 3–6.
Published: 01 November 2020
... to provide valuable services. This article provides insights into one such program, the subsequent injuries benefits trust fund (SIBTF) in California. To be eligible for SIBTF benefits, the injured worker must meet an “overall threshold” and an “industrial threshold” of disability to qualify for benefits...
Newsletter Articles
Guides Newsletter (2020) 25 (3): 12–19.
Published: 01 May 2020
..., Sixth Edition, must be used for impairment ratings, the law reduces the threshold for total disability benefits from 50% to 35% impairment. This legislative adjustment benefited injured workers but sparked additional litigation about whether, when, and how the adjustment should be applied (excerpts from...
Newsletter Articles
Guides Newsletter (2017) 22 (1): 11–16.
Published: 01 January 2017
..., as follows: 1) collect evidence of disease; 2) collect epidemiological data; 3) collect evidence of exposure; 4) collect other relevant factors; 5) evaluate the validity of the evidence; and 6) write a report with evaluation and conclusions. Evaluators also should recognize that thresholds for causation vary...
Newsletter Articles
Guides Newsletter (2019) 24 (3): 10–13.
Published: 01 May 2019
... and are technically adequate; 2) the proper methodology is used in obtaining measurements of translation and angular motion; 3) normal translation and angular-motion thresholds consistent with the literature are used in determining AOMSI. Imaging modalities such as videofluoroscopy, digital fluoroscopy, and upright...
Newsletter Articles
Guides Newsletter (2019) 24 (2): 3–5, 16.
Published: 01 March 2019
... and assignment of CTS are sensitive to threshold changes from a latency of, eg, >4.4 msec vs >4.5 msec. Other factors to consider include whether there are effects from the known association between wrist ratio and CTS and assessing the benefits of neuromuscular ultrasound to diagnose CTS. Nocturnal...
Newsletter Articles
Guides Newsletter (2016) 21 (6): 3–4.
Published: 01 November 2016
... currently available regarding causation of the condition(s) in question, ie, generic causation; the facts of the individual case, ie, specific causation; and the legal threshold in the applicable jurisdiction for acceptance of a condition as work related. The AMA Guides to the Evaluation of Disease...
Newsletter Articles
Guides Newsletter (1997) 2 (5): 2.
Published: 01 September 1997
... frequencies; 2) total the hearing threshold decibel levels of the test frequencies for each ear to determine the decibel sum of hearing threshold levels; 3) use Table 1 to determine a monaural hearing impairment based on the totals calculated in step 2; 4) use Table 2 to calculate the binaural hearing...
Newsletter Articles
Guides Newsletter (2010) 15 (3): 1–7.
Published: 01 May 2010
... multiple organ systems, and the notion of “catastrophic thresholds” involving multiple organ systems may support the understanding that variations in rating may exist in higher rating cases such as those that involve an SCI. The AMA Guides to the Evaluation of Permanent Impairment (Guides) 1 , now...
Newsletter Articles
Guides Newsletter (2007) 12 (6): 5–8.
Published: 01 November 2007
... are so closely related that liability can be attached to the first event). Workers’ compensation systems are a genuine, no-fault form of insurance, and evaluators should be aware of the relevant thresholds and legal definitions for the jurisdiction in which they provide an opinion. The AMA Guides...
Newsletter Articles
Guides Newsletter (2007) 12 (2): 1–3, 9-11.
Published: 01 March 2007
... motion thresholds that are consistent with the scientific literature. Critical analysis of the reference articles reported in White and Panjabi's chapter ( White, Panjabi 1990 ) discussing instability in the spine is necessary to evaluate normal maximal translation and angular motion thresholds...
Newsletter Articles
Guides Newsletter (2002) 7 (3): 4–5.
Published: 01 May 2002
... person impairment (WPI) exceeding 54% or a mental or behavioral impairment of Class 4 or 5 qualifies the individual for catastrophic benefits, and individuals who do not meet the test receive a lesser benefit. By inference, this establishes a parity threshold among dissimilar injuries and dissimilar...
Newsletter Articles
Guides Newsletter (2001) 6 (5): 1–4, 11.
Published: 01 September 2001
... fully defined but may include measurements of genital blood flow, vaginal pH and compliance, and genital vibratory sensory threshold determination. © 2001 American Medical Association. All Rights Reserved. 2001 American Medical Association Sexual dysfunction in both men and women...
Newsletter Articles
Guides Newsletter (2020) 25 (2): 3–8.
Published: 01 March 2020
... from an automobile casualty or personal injury or is used as a threshold to differentiate between a serious and nonserious injury. The AMA Guides is used in similar ways internationally. Most workers' compensation jurisdictions across Canada use the AMA Guides formally by statute...
Newsletter Articles
Guides Newsletter (2015) 20 (3): 6–10.
Published: 01 May 2015
... Association. All Rights Reserved. 2015 American Medical Association Determine if the individual is engaged in SGA. SGA is administratively determined annually by SSA. Monthly income below the current 2015 threshold ($1,090/month for nonblind and $1,820/month for blind) is not “substantial.” A claimant...
Newsletter Articles
Guides Newsletter (2007) 12 (1): 1–3, 9-11.
Published: 01 January 2007
... at this time including Semmes-Weinstein monofilaments, vibration perception threshold (tuning fork), two point discrimination, and digital perception of small objects, Purdue Pegboard Test, and Jamar dynamometer. The wide variety of tests purported to confirm or refute the diagnosis of HAVS have been...
Newsletter Articles
Guides Newsletter (2015) 20 (1): 9–11.
Published: 01 January 2015
... the presence of abnormal light-touch/deep pressure thresholds and abnormal conduction studies” (5th ed, 482). The Sixth Edition states, “sensory deficits can be challenging to grade, since the clinical examination is based on subjective reports by the patient. Grading is based on the results of sensibility...
Newsletter Articles
Guides Newsletter (2017) 22 (4): 12–13.
Published: 01 July 2017
... evolves, so does our understanding of best practices in impairment evaluation. In using impairment as a threshold for permanent disability benefits, it is imperative to distinguish between impairment and disability and to determine an appropriate threshold. Christopher R. Brigham, MD, MMS, Editor...
Newsletter Articles
Guides Newsletter (1997) 2 (5): 4.
Published: 01 September 1997
.... 2. Total the hearing threshold decibel levels of the four test frequencies for each ear separately to get the DSHL (Decibel Sum of Hearing Threshold Levels). 3. Use Table 1 (4th ed., 225) to calculate a monaural hearing impairment based on the totals calculated in step 2. Impairment...
Newsletter Articles
Guides Newsletter (2011) 16 (3): 1–5.
Published: 01 May 2011
... or personal injury or used as a threshold to differentiate between a serious and nonserious injury. The Guides is used in similar ways internationally. Most workers' compensation jurisdictions across Canada use the Guides formally by statute or regulation or accept its use informally as a standard...