Table 2. Characteristics of the subpopulation exposed to fluoroquinolones (6,229 episodes of childhood pneumonia requiring hospitalization) from 2002 to 2017 in Korea.

	N	%
FQ subtypes
Levofloxacin	2,545	40.9
Ciprofloxacin	2,249	36.1
Moxifloxacin	725	11.6
Gemifloxacin	168	2.7
Garenoxacin	0	0
Sparfloxacin	8	0.1
Lomefloxacin	23	0.4
Ofloxacin	351	5.6
Tosufloxacin	89	1.4
Others	71	1.1
Duration of use of FQs (day), Mean (SD)	8.50 (5.95)
Age, years
<8	933	14.98
8–12	501	8.04
≥12	4,795	76.98
Mean (SD)	13.87 (4.71)
Median (min/max)	16 (0/18)