Data Analysis 2. Treating the outcomes as continuous, a correlation coefficient will be computed for HASS and %Forced Expiratory Volume 1. Sub-analyses will also be performed by age group and by %Forced Expiratory Volume1 severity level to see whether the correlation of HASS and %Forced Expiratory Volume1 is consistent across age and asthma severity strata. Treating the outcomes as categorical, if the HASS and %Forced Expiratory Volume1 are each categorized into three levels (mild, moderate, severe), then the investigator could classify each of the nine cells of a 3 by 3 table (HASS X %Forced Expiratory Volume1) as either: