Table 4.

Symptom trajectories over time by age, gender, and initial level of activity

Subgroup	% decrease in number of episodes per weeka	95% CI	p Value for interaction
All episodes of PESE by gender
Females	14	5%−22%
Males	23	11%−36%	p = 0.2
All episodes of PESE by age (years)
<50	12	2%−22%
50+	23	13%−34%	p = 0.1
All episodes of PESE by initial exercise
Phase 1 or 2	18	9%−28%
Phase 3 or 4	14	3%−25%	p = 0.5

Abbreviations: CI, confidence interval; PESE, post‐exertional symptom exacerbation.

^a Adjusted for age and gender.