Table 2 Percentile chart for penile size by gestational age in male newborns
Gestational age (weeks) | Percentiles | ||||||
|---|---|---|---|---|---|---|---|
Min | 1st | 3rd | 50th | 97th | 99th | Max | |
Penile Length (cm) | |||||||
 38 | 2.3 | 2.3 | 2.6 | 3.1 | 4.2 | 4.3 | 4.4 |
 39 | 2.2 | 2.2 | 2.5 | 3.2 | 4.1 | 4.3 | 4.7 |
 40 | 2.0 | 2.2 | 2.2 | 3.3 | 4.4 | 4.5 | 4.8 |
 41 | 2.0 | 2.2 | 2.3 | 3.2 | 4.0 | 4.3 | 4.5 |
 42 | 2.3 | 2.5 | 2.7 | 3.2 | 4.0 | 4.1 | 4.1 |
Penile Width (mm) | |||||||
 38 | 7.6 | 7.7 | 8.2 | 10.3 | 13.1 | 13.2 | 13.2 |
 39 | 6.9 | 7.4 | 8.2 | 10.6 | 12.8 | 13.4 | 13.7 |
 40 | 6.9 | 7.7 | 8.5 | 10.5 | 12.5 | 12.7 | 13.5 |
 41 | 7.8 | 7.9 | 8.3 | 10.5 | 12.4 | 12.7 | 13.2 |
 42 | 7.3 | 7.5 | 8.0 | 10.9 | 12.3 | 13.1 | 13.7 |