Additional file 1 of Predictors of recognition of out of hospital cardiac arrest by emergency medical services call handlers in England: a mixed methods diagnostic accuracy study

Additional file 1: Supplementary Table 1: The twelve counts generated by the complex DTA design for a reported symptom. Supplementary Table 2: The two 2x2 marginal tables obtained by summation of the observed counts. Supplementary Table 3: Unadjusted odds ratio (OR) for key indicator symptoms.