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Retrospective Cohort Study
Copyright: ©Author(s) 2026.
World J Gastroenterol. Sep 21, 2026; 32(35): 121507
Published online Sep 21, 2026. doi: 10.3748/wjg.121507
Table 1 Baseline characteristics and surgical outcomes of infants and toddlers with fistula-in-ano, n (%)/median interquartile range
Characteristic
Overall (n = 675)
Infants (n = 540)
Toddlers (n = 135)
P value
Male675 (100)540 (100)135 (100)
Mean age at the operation (month)11.00 (7.00, 12.00)9.00 (7.00, 12.00)24.00 (21.00, 36.00)< 0.001
Interval between the operation and the first anal fistula (month)5.00 (2.00, 8.00)4.00 (2.00, 7.00)8.00 (1.50, 12.00)< 0.001
History of incision and drainage60 (8.9)50 (9.3)10 (7.4%)0.499
Weight (kg)11.80 (6.90)10.78 (4.51)15.89 (11.67)< 0.001
Height (cm)78.29 (11.61)74.97 (8.56)91.54 (12.75)< 0.001
Systolic blood pressure (mmHg)88.34 (9.52)87.90 (9.17)90.08 (10.66)0.030
Diastolic blood pressure (mmHg)55.09 (7.49)54.71 (7.17)56.60 (8.52)0.442
Respiratory rate on admission (once/minute)22.20 (3.07)22.26 (2.07)21.94 (5.47)0.508
Heart rate on admission (once/minute)112.20 (9.53)113.40 (8.23)107.39 (12.47)< 0.001
Temperature on admission (°C)36.47 (0.68)36.50 (0.25)36.35 (1.43)0.243
Duration of operation (minute)16.00 (10.00, 20.00)16.00 (10.00, 20.00)17.00 (11.00, 21.50)0.199
Adverse events
Fever/pyrexia129 (19.1)119 (22.0)10 (7.4)< 0.001
Sleepiness74 (13.7)53 (9.8)21 (15.6)0.056
Oral antibiotics after operation587 (87.0)470 (87.0)117 (86.7)0.909
Topical antibiotics after operation540 (80.0)432 (80.0)108 (80.0)1.000
Hospital stay (day)3.00 (3.00, 4.00)3.00 (3.00, 4.00)3.00 (3.00, 4.00)0.691
Time to complete wound healing (week)4.00 (3.00, 4.00)4.00 (3.00, 4.00)4.00 (3.00, 4.00)0.139
Recurrence of anal fistula10 (1.5)5 (0.9)5 (3.7)0.046
Follow-up (month)30.00 (16.00, 57.00)29.00 (15.00, 56.00)35.00 (17.00, 60.50)0.084


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