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| Echogenicity Grades [Grading based on ultrasound features] | Longitudinal Length (cm) | ||||||
| No. of Patients | Mean | SD | 95% Confidence Interval for Mean | F Value | P-Value | ||
| Lower Bound | Upper Bound | ||||||
| Grade 0 | 60 | 10.000 | 0.0000 | 10.000 | 10.000 | 66.004 | 0.0005 |
| Grade 1 | 60 | 10.272 | 0.8114 | 10.062 | 10.481 | ||
| Grade 2 | 44 | 10.348 | 0.7457 | 10.121 | 10.574 | ||
| Grade 3 | 24 | 8.758 | 0.4898 | 8.551 | 8.965 | ||
| Grade 4 | 12 | 7.792 | 0.8107 | 7.277 | 8.307 | ||
| Total | 200 | 9.876 | 0.9450 | 9.745 | 10.008 | ||
