Table 2 Table summarizing the statistical analyses performed on oxidative DNA damage markers performed on the seminal fluid of subjects from the two residential areas (LF and VSL)
From: Small noncoding RNAs and sperm nuclear basic proteins reflect the environmental impact on germ cells
Residential area | VSL | LF | Â | Â | ||
|---|---|---|---|---|---|---|
Variable | N (%) | Mean (SD) | N (%) | Mean (SD) | p-value Wilcoxon | p-value Chi-square |
SNBP (%) | Â | |||||
 Protamine |  | 73.0 (19.0) |  | 70.0 (15.0) | 0.25 |  |
 Histone |  | 27.0 (19.0) |  | 30.0 (15.0) | 0.25 |  |
Altered protamine/histone ratio | Â | |||||
 Yes (≠ 85%/15%) | 5 (33.0) |  | 13 (81.0) |  |  | 0.02 |
 No (= 85%/15%) | 10 (67.0) |  | 3 (19.0) |  |  | |
PRM1/PRM2 ratio | Â | 1.2 (0.1) | Â | 1.2 (0.2) | 0.78 | Â |
Altered PRM1/PRM2 ratio | Â | |||||
 Yes (< 0.8 or > 1.2) | 6 (50.0) |  | 6 (43.0) |  |  | 1.00 |
 No (range 0.8–1.2) | 6 (50.0) |  | 8 (57.0) |  |  | |
Altered EMSA results | Â | |||||
 Yes (> 2.3) | 5 (33.0) |  | 16 (100.0) |  |  | 3.3E-03 |
 No (range 1.6–2.3) | 10 (67.0) |  | 0 (0.0) |  |  | |
Oxidative DNA damage categories* | Â | |||||
 Grade 0 | 8 (53.0) |  | 0 (0.0) |  |  | 9.1E-03 |
 Grade 1 | 2 (13.0) |  | 2 (11.8) |  |  | |
 Grade 2 | 4 (27.0) |  | 3 (17.7) |  |  | |
 Grade 3 | 1 (7.0) |  | 11 (64.7) |  |  | |