Categorical variables: Asthma severity (intermittent, mild, moderate or severe persistent), Provider office, Quarter when seen, Medication type (controller or reliever), Age category (0-4, 5-9, 10-17, >17years), active status (active or inactive), Location (ER, Inpatient, Routine visit), Case managed (yes, no), Gender, Psychosocial issues, Diagnosis (asthma, not asthma)