Characteristics of the precompetition heat-strategy questionnaire responders from 50 different national teams during the 2015 IAAF World Championships
| Discipline categories | Number of responders | Male | Female | Age (year) |
|---|---|---|---|---|
| Field events | 76 | 41 | 35 | 27±5 |
| Sprints and hurdles | 88 | 49 | 39 | 25±4 |
| Middle distance | 37 | 21 | 16 | 26±3 |
| Long distance | 94 | 53 | 41 | 29±5 |
| Decathlon/heptathlon | 12 | 8 | 4 | 27±4 |
| Total/mean | 307 | 172 | 135 | 27±5 |
IAAF, International Association of Athletics Federations.