FIGURE 3.

Influence of effect size in the capacity to detect changes in cough frequency with 24-h monitoring. The likelihood of failing to detect a change in cough frequency decreases as the absolute magnitude of the change increases. One hundred simulations were run for each effect size using the same “before” rate (4 coughs·h⁻¹). Dots represent the failure rate from a single simulation run. The solid line represents the mean failure rate for all 100 simulations.