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Table 1 Types of hernia according to recorded main diagnoses compared by age group separately by sexes

From: Inguinal hernia repair in inpatient children: a nationwide analysis of German administrative data

Type of hernia Sex Age group Mean (95% CI) Omnibus test Groupwise comparison
Unilateral hernia M  < 1 3264 (3140–3403) Χ2 = 45.192
df = 3
P < 0.0001
For all comparisons P < 0.0001
1–4 1307 (1176–1453)
5–9 609 (546–689)
10–14 273 (72–315)
F  < 1 635 (593–681) Χ2 = 43.899
df = 3
P < 0.0001
1–4 vs. 5–9: P = 0.0007
Other comparisons
P < 0.0001
1–4 302 (271–341)
5–9 218 (199–241)
10–14 89 (72–113)
Incarcerated unilateral hernia M  < 1 706 (659–760) Χ2 = 45.021
df = 3
P < 0.0001
For all comparisons P < 0.0001
1–4 268 (241–297)
5–9 57 (51–65)
10–14 28 (25–32)
F  < 1 293 (261–326) Χ2 = 44.421
df = 3
P < 0.0001
For all comparisons P < 0.0001
1–4 47 (42–51)
5–9 11 (9–12)
10–14 5 (4–6)
Bilateral hernia M  < 1 697 (670–725) Χ2 = 45.216
df = 3
P < 0.0001
For all comparisons P < 0.0001
1–4 121 (110–133)
5–9 39 (35–44)
10–14 11 (8–13)
F  < 1 163 (153–173) Χ2 = 42.799
df = 3
P < 0.0001
1–4 vs. 5–9: P = 0.082
Other comparisons P < 0.0001
1–4 54 (51–59)
5–9 47 (42–52)
10–14 11 (9–14)
Incarcerated bilateral hernia M  < 1 54 (49–58) Χ2 = 41.787
df = 3
P < 0.0001
5–9 vs. 10–14: P = 0.17
Other comparisons P < 0.0001
1–4 5.4 (4.6–6.2)
5–9 1.3 (0.6–2.1)
10–14 0.6 (0.2–1)
F  < 1 29 (26–32) Χ2 = 40.94
df = 3
P < 0.0001
1–4 vs. 5–9: P = 0.0006
5–9 vs. 10–14: P = 0.0017
Other comparisons P < 0.0001
1–4 3 (2–4)
5–9 1.2 (0.6–1.8)
10–14 0.3 (0–0.7)
  1. Confidence intervals were obtained via bias-corrected, accelerated bootstrap with 10,000 repetitions. The different age groups among the types of hernias were compared by van der Waerden’s test as the omnibus-test followed by groupwise comparisons via the Conover-Iman test with correction for multiple comparisons using the method of Benjamini-Hochberg
  2. M male, F female, CI confidence interval