Both educational interventions resulted in an increase in the proportion of patients with correct inhaler technique : from 4 % to 51 % in Group 1 and from 6 % to 83 % in Group 2 ( Pearson 's Chi-Squared , P = 0.03 , n = 49 , and Pearson 's Chi-Squared , P = 0.01 , n = 48 , respectively ) .