Table 3. Age-dependent composition trends in urinary calculi .
Correlation between stone components and different age groups
| Parameters | One-component stone n(%) | Two-component stone n(%) | Multiple-component stone n(%) | Ch-square test | ||
| Chi-square, df | p-value | |||||
| Age range (years) | 1-10 | 03 (0.24) | 24 (1.94) | 08 (0.64) | 188.0, 16 | P<0.0001 |
| 11-20 | 07 (0.56) | 32 (2.6) | 12 (0.97) | |||
| 21-30 | 20 (1.62) | 246 (19.2) | 20 (1.62) | |||
| 31-40 | 17 (1.38) | 310 (25.2) | 16 (1.29) | |||
| 41-50 | 11 (0.89) | 223 (18.11) | 10 (0.81) | |||
| 51-60 | 06 (0.49) | 157 (12.7) | 08 (0.64) | |||
| 61-70 | 07 (0.57) | 72 (5.9) | 09 (0.73) | |||
| 71-80 | 00 (0) | 00 (0) | 09 (0.74) | |||
| 81-90 | 00 (0) | 01 (0.1) | 03 (0.24) | |||
| Total | 71 (5.77) | 1065 (86.52) | 95 (7.72) | |||
| Stone location | Kidney | 56 (4.54) | 821 (66.6) | 45 (3.65) | 49.97, 4 | P<0.0001 |
| Bladder | 05 (0.40) | 66 (5.36) | 21 (1.7) | |||
| Ureter | 10 (0.81) | 178 (14.5) | 29 (2.35) | |||
| Total | 71 (5.77) | 1065 (86.52) | 95(7.72) | |||