Table 1 (abstract ABS014).

Baseline characteristics (n = 180,693) Continuous variables are presented as mean ± standard deviation. Categorical data are presented as frequencies and percentages

	Total	Probability of poor image quality	Potential modifier
Age (years)	63.3 ± 19.8	–
Gender (n, %) Male Female	95,978 (54.0) 81,542 (46.0)	35.8% 34.0%	N/A
Clinical setting (n, %) Inpatient Outpatient	36,781 (20.7) 140,537 (79.3)	44.9% 32.3%	12.6% (inpatient to outpatient)
Cardiac rhythm (n, %) Tachyarrhythmia No tachyarrhythmia	137,043 (87.0) 20,390 (13.0)	39.4% 34.1%	5.3% (tachycardic to normocardic)
BMI (n, %) Underweight Normal Overweight Obese	4466 (6.0) 21,644 (28.9) 27,735 (37.0) 18,093 (24.1)	26.3% 21.5% 29.1% 49.9%	20.8% (obese to overweight)