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| Microhaematuria positive | n(%) | Urine filtration, n(%) | p-value |
|---|---|---|---|
| trace non-haemolysed | 122(31.7) | 1(4.3) | 0.997 |
| trace haemolysed | 48(12.5%) | 4(17.4) | 0.997 |
| + | 109(28.3) | 10(43.5) | 0.997 |
| ++ | 52(13.5) | 5(21.7) | 0.997 |
| +++ | 54(14.0) | 0.996 | |
| Total | 385 | 23 |
