Table 4.
Effect of exposure to forest environment on serum pro-inflammatory cytokine and GPx levels.
| Variable | Mean (Standard Deviation) | t | p | |
|---|---|---|---|---|
| Urban | Forest | |||
| GPx ❈ | 2.21 (0.16) µM | 2.26 (0.10) pg/mL | −2.039 | 0.048 * |
| IL-6 ❈ | −0.18 (0.25) pg/mL | −0.15 (0.23) pg/mL | −1.089 | 0.283 |
| IL-8 ❈ | 10.76 (2.87) pg/mL | 9.21 (2.72) pg/mL | 4.559 | 0.001 *** |
| TNF-α ❈ | 0.97 (0.17) pg/mL | 0.87 (0.17) pg/mL | 4.130 | 0.001 *** |
Note: GPx: glutathione peroxidase; IL-6: interleukin-6; IL-8: interleukin-8; TNF- α: tumor necrosis factor alpha; ❈ Because of the skewness of the data, log-transformation of the variables was performed; * p < 0.05, *** p < 0.001.