Major haplotypes and prevalences in COPD and control subjects
| EC-SOD haplotype | COPD | Controls | p-value |
| G-G-C-A-C | 0.04 | 0.07 | 0.33 |
| G-G-C-G-C | 0.12 | 0.09 | 0.39 |
| G-G-C-G-T | 0.12 | 0.15 | 0.33 |
| G-G-T-A-C | 0.62 | 0.53 | 0.13 |
| G-G-T-G-C | 0.05 | 0.01 | 0.07 |
| G-G-T-G-T | 0.03 | 0.03 | 0.08 |
| T-T-C-G-C | 0.02 | 0.11 | <0.001 |
Order of SNPs (left to right) is: rs8192287, rs8192288, rs699473, rs2536512, rs8192291.