Table 2.
Results of the statistical analyses of the PAH data.
| Compound | Signed Rank Test
|
|||
|---|---|---|---|---|
| CASE | CONTROL | |||
|
| ||||
| Z-statistic | p | Z-statistic | P | |
| Naphthalene | −2.997* | 0.003 | 0.699 | 0.485 |
| Acenaphthylene | −2.317 | 0.021 | 0.351 | 0.727 |
| Acenaphthene | −1.436 | 0.151 | −0.562 | 0.575 |
| Fluorene | −1.357 | 0.175 | 1.005 | 0.316 |
| Phenanthrene | −1.492 | 0.136 | −0.244 | 0.809 |
| Anthracene | −0.589 | 0.558 | −0.235 | 0.816 |
| Fluoranthene | −1.130 | 0.259 | −0.778 | 0.438 |
| Pyrene | 1.035 | 0.302 | −0.568 | 0.572 |
| Benzo(a)pyrene | 1.341 | 0.181 | 0.011 | 0.994 |
| Dibenz(a,h)anthracene | 0.801 | 0.425 | −1.109 | 0.269 |
| Benzo(ghi)perylene | 2.009 | 0.045 | −1.442 | 0.150 |
| Compound | Rank Sum Test
|
|||
|---|---|---|---|---|
| Pre | Post | |||
|
| ||||
| Mann-Whitney U | p | Mann-Whitney U | P | |
| Naphthalene | 17573.5 | 0.035 | 18993.0 | 0.382 |
| Acenaphthylene | 19059.0 | 0.295 | 19546.0 | 0.618 |
| Benzo(ghi)perylene | 19007.5 | 0.228 | 18888.0 | 0.181 |
*
Bolded entries are statistically significant.