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Table 5 Risk categories of PAL in validation cohort

From: Construction and validation of a nomogram for predicting prolonged air leak after minimally invasive pulmonary resection

Risk categories Predicted PAL risk (%) Number of patients in validation cohort (n) Incidence of PAL (n) Observed frequency of PAL (%)
Low risk < 10% 225 15 6.7
Intermediate risk 10%-20% 186 25 13.4
High risk >20% 142 42 29.6
  1. PAL prolonged air leak