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Retrospective Study
Copyright: ©Author(s) 2026.
World J Clin Pediatr. Dec 9, 2026; 15(4): 120842
Published online Dec 9, 2026. doi: 10.5409/wjcp.120842
Table 1 Overall demographic characteristics of the surgical cohort (n = 1647)
Variable
Category
n (%)
Age groupNewborn101 (6.1)
Infant451 (27.4)
Toddler430 (26.1)
Child649 (39.4)
Adolescent16 (1.0)
SexMale1276 (77.5)
Female371 (22.5)
Table 2 Distribution of undescended testis among male patients (n = 1276)
Diagnosis
n (%)
UDTLeft204 (16.0)
Right198 (15.5)
Bilateral89 (7.0)
Inguinal herniaLeft261 (20.5)
Right388 (30.4)
Bilateral36 (2.8)
Combined hernia and UDT23 (1.8)
Umbilical hernia53 (4.2)
Other hernias24 (1.9)
Table 3 Distribution of undescended testis by age group among male patients (n = 1276), n (%)
Age groupUDT present
Total
Absent
Present
Adolescent2 (14.3)12 (85.7)14
Child235 (46.7)268 (53.3)503
Infant284 (80.0)71 (20.0)355
Newborn65 (92.9)5 (7.1)70
Toddler176 (52.7)158 (47.3)334
Total762 (59.7)514 (40.3)1276
Table 4 Diagnosis distribution (n = 1647), n (%)
Diagnosis
n (%)
UDTLeft204 (12.4)
Right198 (12.0)
Bilateral89 (5.4)
Inguinal herniaLeft370 (22.5)
Right540 (32.8)
Bilateral61 (3.7)
Combined hernia and UDT23 (1.4)
Umbilical hernia130 (7.9)
Other hernias32 (1.9)
Table 5 Diagnosis distribution by age group (n = 1647), n (%)
Diagnosis
Adolescent
Child
Infant
Newborn
Toddler
Total
UDTLeft4 (25.0)94 (14.5)32 (7.1)0 (0.0)74 (17.2)204 (12.4)
Right7 (43.8)111 (17.1)28 (6.2)2 (2.0)50 (11.6)198 (12.0)
Bilateral1 (6.3)53 (8.2)4 (0.9)2 (2.0)29 (6.7)89 (5.4)
Inguinal herniaRight2 (12.5)162 (25.0)196 (43.5)42 (41.6)138 (32.1)540 (32.8)
Bilateral0 (0.0)16 (2.5)26 (5.8)10 (9.9)9 (2.1)61 (3.7)
Left2 (12.5)118 (18.2)131 (29.0)38 (37.6)81 (18.8)370 (22.5)
Combined hernia and UDT0 (0.0)10 (1.5)7 (1.6)1 (1.0)5 (1.2)23 (1.4)
Umbilical hernia0 (0.0)65 (10.0)22 (4.9)5 (5.0)38 (8.8)130 (7.9)
Other hernias0 (0.0)20 (3.1)5 (1.1)1 (1.0)6 (1.4)32 (1.9)
Total166494511014301647
Table 6 Diagnosis distribution by sex (n = 1647), n (%)
Diagnosis
Female
Male
Total
UDTLeft0 (0.0)204 (16.0)204 (12.4)
Right0 (0.0)198 (15.5)198 (12.0)
Bilateral0 (0.0)89 (7.0)89 (5.4)
Inguinal herniaLeft109 (29.4)261 (20.5)370 (22.5)
Right152 (41.0)388 (30.4)540 (32.8)
Bilateral25 (6.7)36 (2.8)61 (3.7)
Combined hernia and UDT0 (0.0)23 (1.8)23 (1.4)
Umbilical hernia77 (20.8)53 (4.2)130 (7.9)
Other hernias8 (2.2)24 (1.9)32 (1.9)
Total37112761647
Table 7 Binomial logistic regression of age group predicting undescended testis presence among males
Predictor
Estimate
SE
Z
P value
Odds ratio
95% confidence interval
Age group0.7600.068111.2< 0.0012.13741.8704-2.4425


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