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24 h urinary biochemical indices of patients in each group (mean ± SD)
| Group | 24 h urinary calcium (mg/24 h) | 24 h urinary oxalic acid (mg/24 h) |
|---|---|---|
| Recurrence group | 158.42 ± 62.13 | 48.41 ± 11.22 |
| Non-recurrence group | 126.27 ± 51.22 | 32.36 ± 7.38 |
| Control group | 123.12 ± 53.45 | 32.34 ± 5.26 |
| F | 13.013 | 6.121 |
| P value | 0.021 | 0.032 |
