| Fully retractable (%) | Partial retraction with part of the glans penis visible (%) | Partial phimosis with only the urethral meatus visible and none of the glans penis (%) | Phimosis with nonvisualization of the meatus and glans (%) | Circumcised (%) Note: study done in Taiwan | |
| 1st grade (age 6-7) | 8 | 40 | 33 | 17 | 3 |
| 4th grade (age 9-10) | 21 | 41 | 25 | 10 | 4 |
| 7th grade (age 12-13) | 58 | 29 | 7 | 1 | 5 |
Int J Urol. 2006;13(7):968.
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The Compendium platform was created by David Kwinter, MD, CCFP(EM).