| All patients | Group I (n = 20) | Group II (n = 20) | Group III (n = 20) | F/χ2# | P value |
Mean ± SD | 12.97 ± 5.09 | 11.25 ± 3.97 | 12.35 ± 4.40 | 15.30 ± 6.01ab | 3.691 | 0.031* |
Range | 5 - 30 | 5 - 18 | 5 - 25 | 5 - 30 |
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