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Clinical characteristics of the two study groups
| Cases | Controls | |
|---|---|---|
| NCCC study | ||
| Number of subjects | 371 | 380 |
| Mean age and SD | 62 ± 10 | 65 ± 6 |
| Mean %WAA and SD | 83 ± 13 | 82 ± 15 |
| Gender (M/F) | 192/179 | 181/199 |
| CCCC study | ||
| Number of subjects | 590 | 458 |
| Mean age and SD | 64 ± 13 | 57 ± 13 |
| Mean %WAA and SD | 83 ± 16 | 86 ± 16 |
| Gender (M/F) | 331/259 | 169/289 |
| Pooled study | ||
| Number of subjects | 961 | 838 |
| Mean age and SD | 63 ± 12 | 61 ± 13 |
| Mean %WAA and SD | 83 ± 14 | 84 ± 15 |
| Gender (M/F) | 523/438 | 350/488 |
