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Table 2 Variabel codings

From: General practitioners' reasoning when considering the diagnosis heart failure: a think-aloud study

Information as presented in the case vignette Content Value
"Shortness of breath on level" Dyspnoea Positive (presence of finding)
"Pathological R-progression on ECG" ECG Positive (pathology)
"He has not had swollen legs" Oedema Negative (absence of finding)
"Regular rhythm" Rhythm Negative (normality)
"Relative heart volume 630 ml/m2" Heart volume 630 (numeric values as presented in the text)
  1. Examples of coding of variables in the case vignettes. Positive value = precense of finding, or pathological finding, negative value = absence of finding, or normal finding.