Table 2.

Hospitalized bacterial infection types by cohort. Only infection outcome types containing 5% or more of infections are shown. Some hospitalized infections were associated with more than 1 discharge diagnosis (e.g., pneumonia and bacteremia). Percentages were calculated with the total number of hospitalizations as the denominator.

Infection Type	Number in JIA	Number in ADHD
Upper respiratory tract	110 (30%)	1544 (35%)
Pneumonia	87 (24%)	891 (20%)
Bacteremia/septicemia	67 (18%)	523 (12%)
Urinary tract/pyelonephritis	65 (18%)	402 (9%)
Skin and soft tissue	44 (12%)	616 (14%)
Abdominal abscess	20 (6%)	629 (14%)
Gastroenteritis	30 (8%)	331 (8%)
Total hospitalized infections	365	4,398

JIA = juvenile idiopathic arthritis; ADHD = attention-deficit hyperactivity disorder