The claim states '20-50%' for Sudomotor Dysfunction with 'Abnormal QSART findings' as the confidence interval. However, the abstract reports '50% (4/8) of autonomic function tests' - not a range of 20-50%. The abstract does not mention 'QSART' specifically, nor does it break down autonomic function test results by sudomotor vs. other autonomic domains. The 50% figure refers to all autonomic function tests combined, not specifically sudomotor dysfunction. The claim appears to be conflating or misrepresenting the 50% figure as a range (20-50%) and incorrectly attributing it specifically to QSART/sudomotor findings when the abstract only mentions general 'autonomic function tests' without specifying QSART or sudomotor dysfunction separately.

Suggested fix: Sudomotor Dysfunction: 50% (4/8) had abnormal autonomic function tests (specific QSART data not reported in abstract)

The source abstract contains NO quantitative data whatsoever about POTS risk by COVID severity. The abstract is a brief 4-paragraph statement from the American Autonomic Society that: (1) introduces Long-COVID and POTS as a concern, (2) outlines the scope of the problem in general terms, (3) calls for healthcare resources and research investment, and (4) lists author disclosures. There are NO numbers, percentages, risk ratios, or any statistical data of any kind in this abstract. The claimed specific risk ratios (Mild/Outpatient: 1.0, Moderate: 2.5, Severe/Hospitalized: 4.0) with their precise decimal values appear completely fabricated. These are not rounded versions of real data, nor are they plausible interpretations of any text in the abstract. The abstract is purely a policy/research call-to-action statement without any epidemiological findings.

The claim states that '30-67%' of Long COVID patients meet POTS diagnostic criteria. However, the abstract contains NO percentage range of any kind. The abstract describes a case series of 20 patients with autonomic disorders after COVID-19, of which 15 had POTS. This represents 15/20 = 75% of the study sample, not 30-67%. The claim's range of '30-67%' does not appear anywhere in the abstract and does not match the actual data (75% of the small sample had POTS). The abstract does not provide any prevalence estimate for Long COVID patients generally - it is a small case series (n=20) of patients already selected for having autonomic symptoms, not a prevalence study in a broader Long COVID population. The claim appears to be either completely fabricated or severely misattributed from a different source.

Suggested fix: Among 20 patients with persistent neurologic and cardiovascular complaints following COVID-19, 75% (15/20) were diagnosed with POTS. This is a case series, not a prevalence estimate in Long COVID generally.

The claimed statistic of '30-67%' POTS prevalence among Long COVID patients does not appear anywhere in the abstract. The abstract describes a small case series of 20 patients, not a prevalence study. Of the 20 patients in the case series, 15 had POTS (75%), but this is not a prevalence estimate—it's a case series of patients who were specifically referred for autonomic symptoms. There is no mention of '30-67%' or any prevalence range. The study design (retrospective case series of 20 patients) cannot generate prevalence estimates. The claimed confidence interval format and percentage range appear completely fabricated relative to the actual source content.

Suggested fix: The source is a case series of 20 patients, not a prevalence study. Among the 20 patients referred for autonomic symptoms post-COVID-19, 15 (75%) were diagnosed with POTS. No prevalence estimate for POTS in the general Long COVID population can be derived from this study.

The abstract mentions 'orthostatic intolerance' as one of several debilitating symptoms in 'long COVID' and suggests it may be related to autonomic nervous system disruption. However, the abstract contains NO quantitative statistics whatsoever - no percentages, no ranges like '50-80%', and no claim that orthostatic intolerance is the 'most common autonomic manifestation.' The abstract is purely descriptive and conceptual, discussing the rationale for an underlying impaired autonomic physiology without presenting any prevalence data. The specific statistic '50-80%' with confidence interval 'most common autonomic manifestation' cannot be verified from this abstract and appears to be either from the full paper or potentially fabricated/synthesized from other sources.

The claim states 'Abnormal HRV: 40-75%' with 'Reduced parasympathetic indices' as a confidence interval. This is fabricated. The abstract contains NO specific percentage values (40-75% or any other range) for HRV abnormalities. The abstract only describes qualitative findings: 'reduced HRV,' 'reduction in global HRV,' 'increased sympathetic modulation influence,' and 'decrease in parasympathetic modulation.' The '40-75%' value appears completely invented - it does not match any statistic in the abstract and is implausibly formatted as a range that supposedly represents abnormal HRV prevalence or severity. The 'Reduced parasympathetic indices' is described in the abstract as a finding, but it is not presented as a 'confidence interval' as the claim suggests. The claim fundamentally misrepresents the nature of the data (qualitative descriptive findings vs. quantitative percentage ranges).

Suggested fix: Long COVID patients showed reduced HRV with decreased parasympathetic modulation and increased sympathetic modulation compared to COVID-free controls (qualitative findings; no specific percentages provided in abstract)