Table 2.

Change of primary outcome measures

	Placebo	Cineole
Mean of improvement a	mean	mean	P-value*
Of intensity of dyspnea	0.42 (0.75)	0.44 (0.70)	0.8352
Of secretion quantity	0.42 (0.69)	0.44 (0.75)	0.8352
Of cough frequency	0.64 (0.87)	1.18 (1.12)	0.0001
Of thorax pain at coughing	0.58 (0.98)	0.60 (0.98)	0.5896
Of findings at auscultation	0.31 (1.17)	0.35 (1.15)	0.7198
Of lung function	0.42 (0.73)	0.34 (0.70)	0.3249
Of Sum Score	2.91 (2.803)	3.55 (3.022)	0.0383

Composed by the sum of symptoms after 4 days of treatment with cineole or placebo.

*P-values demonstrate the difference between the two treatment groups.

^aDefinition of the scores is defined in the paragraph with the outcome measures.