Table 2.
Urinary Concentrations of 8-isoprostane (creatinine-adjusted) in 5, 9 and 14 year old boys and girls (ng/mg creatinine).
| Age 5 | N | Mean and SD | P-value | Median | Min | Max |
|---|---|---|---|---|---|---|
| Boys | 119 | 4.8 ± 8.4 | 0.86 | 3.0 | 0.6 | 67.7 |
| Girls | 137 | 4.5 ± 7.4 | 3.2 | 0.3 | 67.2 | |
| All | 256 | 4.6 ± 7.9 | 3.1 | 0.3 | 67.7 | |
| Age 9 | ||||||
| Boys | 118 | 4.5 ± 7.3 | 0.74 | 2.9 | 0.7 | 50.1 |
| Girls | 132 | 4.1 ± 6.1 | 2.8 | 0.8 | 51.1 | |
| All | 250 | 4.2 ± 6.7 | 2.9 | 0.7 | 51.1 | |
| Age 14 | ||||||
| Boys | 121 | 6.4 ± 13.3 | 0.38 | 2.8 | 0.2 | 107.1 |
| Girls | 137 | 5.7 ± 11.1 | 2.7 | 0.2 | 100.5 | |
| All | 258 | 6.0 ± 12.2 | 2.6 | 0.2 | 107.1 | |
P-values are for t-tests comparing isoprostane levels between boys and girls at each age.