Cut points of 3 days of albuterol use , average albuterol use of 1 actuation/day , and highest albuterol use of 4 actuations/day in the 1-week period had 73 % sensitivity and 62 % specificity , 78 % sensitivity and 67 % specificity , and 78 % sensitivity and 66 % specificity , respectively , for predicting an ACQ-5 1.5 .