Value of Peak Expiratory Flow Rate in Evaluating Cough Ability in Patients Undergoing Lung Surgery

Table 1

Semiquantitative cough strength score.

Score	The condition of coughing
0	No cough on command
1	Visible movement but no audible cough
2	Weakly (barely) audible cough
3	Clearly audible cough
4	Stronger cough
5	Multiple sequential strong coughs