2013
DOI: 10.1093/fampra/cmt007
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The time-efficiency principle: time as the key diagnostic strategy in primary care

Abstract: The test and retest opportunity afforded by reviewing a patient over time substantially increases the total gain in certainty when making a diagnosis in low-prevalence settings (the time-efficiency principle). This approach safely and efficiently reduces the number of patients who need to be formally tested in order to make a correct diagnosis for a person. Time, in terms of observed disease trajectory, provides a vital mechanism for achieving this task. It remains the best strategy for delivering near-optimal… Show more

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Cited by 25 publications
(27 citation statements)
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“…GPs rely on blood test results over clinical presentation while 40% of patients with early RA might be rheumatoid factor negative (24). The challenge in general practice with a low incidence of early RA is to use assessment techniques that are useful for detection (25). Similar to other qualitative studies, GPs' uncertainty in identifying clinical characteristics was observed, mainly due to the mild and slowly progressive symptoms that are variable and often nonspecific (17,26).…”
Section: Comparison With Existing Literaturementioning
confidence: 92%
“…GPs rely on blood test results over clinical presentation while 40% of patients with early RA might be rheumatoid factor negative (24). The challenge in general practice with a low incidence of early RA is to use assessment techniques that are useful for detection (25). Similar to other qualitative studies, GPs' uncertainty in identifying clinical characteristics was observed, mainly due to the mild and slowly progressive symptoms that are variable and often nonspecific (17,26).…”
Section: Comparison With Existing Literaturementioning
confidence: 92%
“…In some patients, adequate diagnosis requires time for symptoms to evolve. 123 Finally, the presentation of cancer might be obscured by factors that hamper timely diagnosis, such as comorbidity. Existing respiratory disease can prolong the diagnosis of lung cancer, 11 and a high burden of psychiatric or psychosocial comorbidity is associated with delayed diagnosis of colorectal cancer.…”
Section: The Diagnostic Processmentioning
confidence: 99%
“…The timeefficiency principle is considered a core diagnostic strategy in low-prevalence settings, and safely as well as efficiently reduces the number of patients who need to be formally tested to make a correct or specific diagnosis for a given person. 26,27 In dealing with diagnostic uncertainty, all GPs screened their patients for certain red flags and some of the GPs applied the familiarity heuristic. The aforementioned red flags largely corresponded with warning signs for secondary headache mentioned in guidelines.…”
Section: Comparison With Existing Literaturementioning
confidence: 99%