Table 2.

Comparison between Thompson’s data and our data

Sl. No.	Age group in years	Meatus size in Fr (Thompson’s study)	Meatus size in Fr (our study)
1	1–10	11.95	NA
2	11–20	19.14	23.09 (up to 20 years)
3	21–30	30.24	28.75
4	31–40	27.81	27.67
5	41–50	28.65	28.73
6	51–60	30.45	29.23
7	61–70	30.77	29.76
8	71–80	30.77	28.15
9	81–90	NA	29.5
10	>90	NA	30

Conversion equation used: 25.4 × meatus diameter in inches/0.33 = meatus size in Fr