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| GI.1 N(%) | GII.4 N(%) | GI or GII.4 N(%) | |
|---|---|---|---|
| Non-swimmers (N = 199) | 0 (0.0) | 0 (0.0) | 0 (0.0) |
| Waders (Water contact without head immersion, N = 195) | 1 (0.5) | 2 (1.0) | 3 (1.5) |
| Swimmers (Water contact with head immersion, N = 903) | 13 (1.4) | 22 (2.4) | 31 (3.4) |
| p-valuea | 0.14 | 0.02 | 0.003 |
| p-valueb | 0.08 | 0.02 | 0.004 |
a Swimmers vs. non-swimmers (Fisher’s exact test)
b Swimmers vs. non-swimmers and waders combined (Fisher’s exact test)
