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| Pass | Refer | Unable | P-value (Pass/NP) | P-value (ATT/UTT) | ||
|---|---|---|---|---|---|---|
| age 2.1–3.0 | Year 1 | 38 | 4 | 21 | ||
| Year 2 | 99 | 6 | 3 | <0.0001 | <0.0001 | |
| age 3.1–4.0 | Year 1 | 411 | 17 | 36 | ||
| Year 2 | 556 | 32 | 4 | 0.0024 | <0.0001 | |
| age 4.1–5.0 | Year 1 | 635 | 17 | 9 | ||
| Year 2 | 777 | 34 | 5 | 0.45 | 0.18 | |
| age 5.1–6.0 | Year 1 | 239 | 7 | 2 | ||
| Year 2 | 296 | 9 | 0 | 0.81 | 0.20 |
