Table 2. Differences in penile length, digit lengths, anogenital distances, and anthropometric data according to birth weight.
| Variable | Normal birth weight group (n=24) | Low birth weight group (n=31) | p-value |
|---|---|---|---|
| Penile size (cm) | 3.3±0.2 | 2.9±0.4 | <0.001 |
| Testis size (mL ) | 1.1±0.4 | 0.8±0.4 | <0.001 |
| Height (cm) | 49.8±1.9 | 44.1±2.9 | <0.001 |
| Weight (kg) | 3.2±0.5 | 2.1±0.4 | 0.006 |
| SPL/height (×10-2) | 6.9±0.5 | 6.3±0.4 | <0.001 |
| Digit 2 (cm) | 2.6±0.2 | 2.2±0.2 | <0.001 |
| Digit 4 (cm) | 2.8±0.3 | 2.4±0.2 | <0.001 |
| Digit 2/4 ratio | 0.92±0.03 | 0.93±0.05 | 0.419 |
| AGD 1a (cm) | 4.2±0.3 | 3.6±0.4 | <0.001 |
| AGD 2b (cm) | 3.5±0.3 | 3.1±0.3 | <0.001 |
| AGD 3c (cm) | 2.3±0.2 | 2.0±0.2 | <0.001 |
| AGD 3/height (×10-2) | 4.8± 0.5 | 4.6±0.4 | 0.056 |
| AGD 1-3 (cm) | 1.8±0.3 | 1.6±0.3 | <0.001 |
| AGD 1-2 (cm) | 0.6±0.1 | 0.5±0.1 | 0.003 |
| AGD (1-2)/(1-3) ratio | 0.35±0.05 | 0.34±0.05 | 0.478 |
Values are presented as mean±standard deviation.
SPL, stretched penile length; AGD, anogenital distance.
a:AGD1 was the distance measured from the anterior aspect of the penis to the anal verge. b:AGD2 was the distance measured from the posterior aspect of the penis to the anal verge. c:AGD3 was the distance measured from the posterior aspect of the scrotum to the anal verge.