Table III.
Shapiro-Wilks, Levene, one-way ANOVA, Kruskal-Wallis and Dunn's test results across BMI categories.
| Test | Variable | Category | Test result (P-value) |
|---|---|---|---|
| Shapiro-Wilks | Age | NW | 0.988 (0.011) |
| Shapiro-Wilks | Age | OW | 0.992 (0.009) |
| Shapiro-Wilk | Age | OB | 0.992 (0.300) |
| Shapiro-Wilks | log(PSA) | NW | 0.903 (<0.001) |
| Shapiro-Wilks | log(PSA) | OW | 0.832 (<0.001) |
| Shapiro-Wilks | log(PSA) | OB | 0.909 (<0.001) |
| Levene's | Age | NW vs. OW | 0.631 (0.427) |
| Levene's | Age | NW vs. OB | 2.188 (0.138) |
| Levene's | Age | OW vs. OB | 1.075 (0.300) |
| Levene's | log(PSA) | NW vs. OW | 0.631 (0.427) |
| Levene's | log(PSA) | NW vs. OB | 2.188 (0.138) |
| Levene's | log(PSA) | OW vs. OB | 1.075 (0.300) |
| One-way ANOVA | Age | NW vs. OW vs. OB | 3.252 (0.039) |
| One-way ANOVA | log(PSA) | NW vs. OW vs. OB | 0.107 (0.898) |
| One-way ANOVA, Bonferroni post hoc | Age | NW vs. OW | 3.374 (0.200) |
| One-way ANOVA, Bonferroni post hoc | Age | NW vs. OB | 5.775 (0.0498) |
| One-way ANOVA, Bonferroni post hoc | Age | OW vs. OB | 1.177 (0.834) |
| Kruskal-Wallis | Age | NW vs. OW vs. OB | 8.55 (0.014) |
| Kruskal-Wallis | log(PSA) | NW vs. OW vs. OB | 1.687 (0.430) |
| Dunn's | Age | NW vs. OW | 0.065 |
| Dunn's | Age | NW vs. OB | 0.020 |
| Dunn's | Age | OW vs. OB | 0.984 |
NW, normal-weight; OB, obese; OW, overweight; PSA, prostate specific antigen.