Table 2.

Paris Classification data for study participants.

	Frequency (percentage)
Age
A1a 0 - < 10 years	28 (24.1%)
A1b 10 - <17 years	79 (68.1%)
A2 17-18 years	2 (1.7%)
Missing	(6.0%)
Location
L1 Distal Ileum	31 (29.5%)
L2 Colonic	15 (12.9%)
L3 Ileocolonic	45 (38.8%)
L4a Upper disease proximal to Ligament of Treitz	9 (7.8%)
L4b Upper disese distal to ligament of Treitz and proximal to distal 1/3 ileum	4 (3.4%)
Unknown	1 (0.9%)
Missing	11 (9.5%)
Behavior
B1 Non structuring, nonpenetrating	85 (73.3%)
B2 Stricturing	9 (7.8%)
B3 Penetrating	1 (.9%)
B2B3: both penetrating and structuring	5 (4.3%)
P: perinal disease modifier	4 (3.4%)
B1 and P	1 (0.9%)
B2 and P	1 (0.9%)
Missing	10 (8.6%)
Growth
G0 No growth delay	65 (56.0%)
G1 Growth delay	41 (35.3%)
Unknown	3 (2.4%)
Missing	(6.0%)