Table 2.
Relationships between plasma F2-isoprostanes and study variables.
| Continuous/ordinal variables | Spearman correlation coefficient | p value |
|---|---|---|
| Age | 0.148 | 0.03 |
| BMI | 0.189 | <0.01 |
| Morbidity scorea | 0.437 | <0.01 |
|
| ||
| Categorical variables (Kruskal-Wallis test) | F2-isoprostane level mean (SD) (pg/mL) |
p value |
|
| ||
| Race | ||
| NHW | 80.1 (34.9) | <0.001 |
| AA | 51.1 (20.1) | |
|
| ||
| NHW | 80.1 (34.9) | <0.001 |
| WAI | 33.8 (9.0) | |
|
| ||
| AA | 51.1 (20.1) | <0.001 |
| WAI | 33.8 (9.0) | |
|
| ||
| Sex | ||
| Females | 59.4 (35.8) | 0.43 |
| Males | 51.1 (23.2) | |
|
| ||
| Education | ||
| College graduate | 50.5 (24.8) | 0.26 |
| Some college | 59.2 (35.2) | |
| HS grads | 60.9 (30.1) | |
| Less than HS | 53.8 (31.0) | |
|
| ||
| Obesity | ||
| Nonobese | 51.1 (23.2) | 0.04 |
| Obese | 69.2 (35.8) | |
|
| ||
| Heart disease | ||
| Yes | 58.6 (30.1) | <0.01 |
| No | 47.0 (24.9) | |
|
| ||
| Endocrine disease | ||
| Yes | 56.6 (23.9) | 0.09 |
| No | 50.8 (28.3) | |
|
| ||
| Kidney disease | ||
| Yes | 82.6 (32.3) | <0.01 |
| No | 49.3 (25.9) | |
|
| ||
| Allergy conditions | ||
| Yes | 67.0 (28.4) | <0.01 |
| No | 46.4 (25.6) | |
|
| ||
| Cancer | ||
| Yes | 79.7 (45.0) | 0.07 |
| No | 50.3 (26.4) | |
aMorbidity score summarizes the number of comorbidities.