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Kruskall-Wallis one way ANOVA by ranks of ARM severity scores when subjects were categorised by CNV subtype in first eye
| CNV subtype in first eye | No | Mean rank |
| Wholly classic (classic 100%) | 23 | 24.11 |
| Predominantly classic (classic 50 to 99%) | 20 | 32.85 |
| Minimally classic (classic 1 to 49%) | 15 | 41.67 |
| Occult (classic 0%) | 9 | 49.06 |
χ2 14.39, degrees of freedom 3, p = 0.002.
