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Table 1 Demographics of all participants, cases, controls and mono-infection cases
| Characteristics | All (Count,%) | Cases (Count,%) | Controls (Count,%) | Mono-infection (Count,%) | p-value† |
|---|---|---|---|---|---|
| Age (Mean, SD) | 20.8 (3.1) | 20.7 (3.1) | 21.1 (2.9) | 20.7 (3.2) | 0.781 |
| Male | 9055 (99.8) | 7713 (99.7) | 1342 (99.9) | 3422 (99.8) | 0.902 |
| Current Smoker | 2475 (27.3) | 2090 (27.0) | 385 (28.6) | 887(25.9) | 0.220 |
| Recruit | 6048 (66.6) | 5568 (72.0) | 480 (35.7) | 2495 (72.7) | <0.001 |
| Asthma | 1833 (20.2) | 1597 (20.7) | 236 (17.6) | 721 (21.0) | 0.051 |
| Heart Disease | 102 (1.1) | 83 (1.1) | 19 (1.4) | 37 (1.1) | 0.748 |
| Total | 9077 (100.0) | 7733 (100.0) | 1344 (100.0) | 3430 (100.0) | - |
