Table 1.
Characteristics of control, cryptorchid and hernia/hydrocele subjects and parents
| Variable | Control | Congenital | Acquired | Hernia/hydrocele | ||||
|---|---|---|---|---|---|---|---|---|
| N | N | N | N | |||||
| Age# | 358 | 2.0 (0.9, 7.0) |
230 | 1.2** (0.8, 2.0) |
182 | 8.0** (5.4, 10.0) |
104 | 3.0* (1,8, 5.7) |
| Race | 358 | 230 | 182 | 104 | ||||
| • Caucasian | 230 (64%) | 175* (76%) | 154** (85%) | 86** (83%) | ||||
| • African American | 85 (24%) | 36 (16%) | 15 (9%) | 11 (11%) | ||||
| • Asian | 16 (4.5%) | 7 (3%) | 0 | 5 (5%) | ||||
| • Other/Mixed | 27 (7.5%) | 12 (5%) | 13 (7%) | 1 (1%) | ||||
| Birth weight (gm)## | 305 | 3398 ± 660 | 215 | 3385 ± 625 | 159 | 3381 ± 710 | 84 | 3439 ± 569 |
| SGA1 | 10 (3%) | 10 (4.6%) | 3 (2%) | 0 | ||||
| Prematurity | 358 | 29 (8%) | 230 | 18 (8%) | 182 | 21 (12%) | 104 | 3 (3%) |
| Twin gestation | 358 | 1 (0.3%) | 240 | 1 (0.4%) | 182 | 6* (3%) | 104 | 2 (2%) |
| Maternal age## | 353 | 29 ± 6 | 230 | 29 ± 6 | 179 | 29 ± 6 | 104 | 29 ± 7 |
| Paternal age## | 340 | 31 ± 7 | 224 | 31 ± 7 | 174 | 31 ± 7 | 102 | 31 ± 7 |
#
Median (1st, 3rd quartiles)
##
Mean ± standard deviation
*
p≤0.05
**
p<0.01 vs. control group
1
SGA (small for gestational age): <2500 gm at ≥37 weeks’ gestation or age-adjusted birth weight <10th percentile based on Babson and Benda nomogram