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Table 3 Penile Length & Width

From: Appraisal of testicular volumes: volumes matching ultrasound values referenced to stages of genital development

Genital stage

Age (years)

range

Number

Length (cm) mean ± SD

Width (cm) mean ± SD

G-1a

3.4 to 6.5

10

4.77 ± 0.68

1.46 ± 0.18

G-1b

7.2 to 8.7

10

4.80 ± 0.56

1.40 ± 0.20

G-1c

8.9 to 13.2

16

4.88 ± 0.67

1.66 ± 0.20

G-1 all

3.4 to 13.2

36

4.83 ± 0.64

1.53 ± 0.23

G-2

10.0 to 15.0

16

5.28 ± 0.74*

1.74 ± 0.25

G-3

11.4 to 15.0

10

7.40 ± 0.49**

2.24 ± 0.37

G-4

11.7 to 16.9

21

8.57 ± 1.29*

2.77 ± 0.36

G-5

13.0 to 17.5

19

9.47 ± 0.99*

3.22 ± 0.28

Adult

15.8 to 34.0

43

9.66 ± 1.00

3.09 ± 0.39

  1. Difference between the means: *p < 0.05; **p < 0.001
  2. G-1a, b, c: The only criterion for separation is age