The DNS frequency (% runners) and RR ratio in the control and symptomatic group and subgroups by system and localisation of symptoms (adjusted for race type and gender)
| Group | System | Types of symptoms | Cohort (n=7031) | Per cent | Runners who started | DNS | % DNS | RR * | 95% CI | p Value† |
|---|---|---|---|---|---|---|---|---|---|---|
| Control | 5693 | 81.0 | 5316 | 377 | 6.6 | − | − | − | ||
| Symptomatic | Any | All | 1338 | 19.0 | 1191 | 147 | 11.0 | 1.06 | 1.03 to 1.10 | 0.0002† |
| Localised | 808 | 11.5 | 741 | 67 | 8.3 | 1.02 | 1.00 to 1.04 | 0.0571 | ||
| Systemic | 530 | 7.5 | 450 | 80 | 15.1 | 1.16 | 1.02 to 1.33 | 0.0288† | ||
| Respiratory | Localised | 494 | 7.0 | 455 | 39 | 7.9 | 1.01 | 0.99 to 1.03 | 0.3718 | |
| Systemic | 402 | 5.7 | 335 | 67 | 16.7 | 1.15 | 1.01 to 1.31 | 0.0317† | ||
| Gastrointestinal | Localised | 168 | 2.4 | 150 | 18 | 10.7 | 1.47 | 0.94 to 2.30 | 0.0911 | |
| Systemic | 81 | 1.2 | 68 | 13 | 16.0 | 2.16 | 1.30 to 3.57 | 0.0028† | ||
| Resp and GIT | Localised | 48 | 0.7 | 41 | 7 | 14.6 | 2.00 | 1.01 to 3.96 | 0.0464† | |
| Systemic | 46 | 0.7 | 38 | 8 | 17.4 | 2.29 | 1.22 to 4.32 | 0.0100† | ||
| Other‡ | Localised | 194 | 2.8 | 177 | 17 | 8.8 | 1.01 | 0.99 to 1.04 | 0.1684 | |
| Systemic | 93 | 1.3 | 85 | 8 | 8.6 | 1.19 | 0.62 to 2.32 | 0.5999 |
*RR ratio—reference group is the control group.
†Significantly different (pairwise vs control group).
‡Non-respiratory and non-gastrointestinal symptom subgroup.
DNS, did not start; GIT, gastrointestinal; Resp, respiratory; RR, relative risk.