Table 1 Comparisons of clinical characteristics of sporadic VSs in different age groups.
Clinical characteristics | Young (n = 38) | Middle-age (n = 191) | Elderly (n = 53) | P value | Statistical methods |
|---|---|---|---|---|---|
Age at onset of initial symptom (years) | 22.4 ± 5.4 | 44.0 ± 8.6 | 60.3 ± 6.3 | 0.001 | one-way ANOVA |
Gender | |||||
Male | 20 | 85 | 25 | 0.647 | Chi-square test Fisher’s Exact test |
Female | 18 | 106 | 28 | ||
Tumour location | |||||
Right side | 16 | 102 | 28 | 0.438 | Chi-square test Fisher’s Exact test |
Left side | 22 | 89 | 25 | ||
Tumour type | |||||
Solid | 30 | 135 | 36 | 0.110 | Chi-square test Fisher’s Exact test |
Cystic | 8 | 56 | 17 | ||
Size (mm) | 34.3 ± 13.3 | 26.2 ± 10.2 | 23.6 ± 9.5 | 0.001 | one-way ANOVA |
Stage 2 (1–15 mm) | 2 | 32 | 15 | 0.017 | Kruskal-Wallis one way ANOVA |
Stage 3 (16–30 mm) | 17 | 103 | 27 | ||
Stage 4 (31–40 mm) | 12 | 42 | 9 | ||
Stage 5 (>40 mm) | 7 | 14 | 2 | ||
Symptom duration (years) | 1.6 ± 2.6 | 3.3 ± 4.6 | 4.4 ± 5.3 | 0.026 | one-way ANOVA |
