Coverage and response rate of the injury and illness surveillance system during IAAF World Athletics Championships.
| Daegu 2011 | Berlin 20092 | Osaka 20071 | |||
|---|---|---|---|---|---|
| Total number of countries | 201 | 200 | 200 | ||
| Total number of registered athletes | 1851 | 1979 | 1980 | ||
| Number of medical teams participating in the injury and illness surveillance (%) | 61(30.3) | 47 | (23.5) | 49 | (24.5) |
| Number of athletes covered (%) | 1512(81.7) | 1486 | (75.1) | 1660 | (84.0) |
| Comparisons with Daegu 2011 surveillance | χ2=24.5; p<0.001 | χ2=3.1; p=0.08 | |||
| Number of report forms returned (response rate in %) | 515(93.8) | 382 | (90.3) | 333 | (76.0) |
| Comparisons with Daegu 2011 surveillance | χ2=4.1; p=0.04 | χ2=66.6; p<0.001 | |||