Table 2.

Surgical characteristics and outcome concerning age groups (infants < 12 months vs. children > 12 months).

	Infants (n = 33)	Children (n = 9)	p-value
Age at diagnosis [median in months (range)]	4 (1–12)	31 (18–146)	<0.0001
Surgery for perianal abscess prior to FIA identification			0.2710
Yes	15 (45%)	2 (22%)
No	18 (55%)	7 (78%)
Perioperative antibiotic treatment			1.000
Yes	13 (39%)	3 (33%)
No	20 (61%)	6 (67%)
Duration of seton [median in days (range)]	145 (20–329)	134 (2–210)	0.4257
Removal of seton			0.3213
By chance	6 (18%)	2 (22%)
By attending physician	19 (58%)	7 (78%)
Unknown	8 (24%)	0
Postsurgical complications			0.2132
None	29 (88%)	7 (78%)
Perianal abscess	1 (3%)	2 (22%)
Re-FIA	3 (9%)	0
Long-term sequela	n = 28	n = 9	0.2884
Constipation	1 (4%)	0
Fecal incontinence (preexisting prior to surgery)	0	1 (11%)
Constipation and pain	1 (4%)	0
Constipation and fecal incontinence (preexisting prior to surgery)	0	1 (11%)
Perianal dermatitis	2 (7%)	0
None	24 (85%)	7 (78%)

FIA, fistula-in-ano.