Table 2.

Number and proportion of patients in each group according to the presence of active smoking, ex-smokers and nonsmokers.

		Smoking
Groups	ex-smokers	active smoking	nonsmokers	Amount
Group I (physio)	9 (0.26) aA	11 (0.31) aA	15 (0.43) aA	35 (1.00)
Group Il (no physio)	14 (0.40) aA	6 (.17) aA	15 (0.43) aA	35 (1.00)
Amount	23 (0.33)	17 (0.24)	30 (0.43)	70 (1.00)

Two proportions followed by the same lowercase letter do not differ in groups (rows). Two proportions followed by the same capital letter do not differ in the types of smoking (P>0.05). Goldman test to compare proportions between and within populations multinomina.