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Table 4 Distribution of McIsaac scores and positive GAS results

From: Detection of group a streptococcal pharyngitis by quantitative PCR

McIsaac score Total GAS positive Estimated risk of GAS
n (%)* n (%)+ (%) [23]
≤0 25 (20) 0 (0) 8-9
1 22 (17) 1 (4) 13-14
2 40 (31) 11 (27) 23-23
3 27 (21) 6 (22) 37-37
≥4 13 (10) 6 (46) 55-56
  1. * % of total patients with the corresponding McIsaac score.
  2. + % of patients with the corresponding McIsaac score who were GAS positive.