Confidence intervals: a useful statistical tool to estimate effect sizes in the real world

Abstract

A prospective cohort study evaluated the association between the presence of asthma and the risk of developing obstructive sleep apnea (OSA) in adults. Adults were randomly recruited from a population-based list of state employees and were followed for four years. Participants with asthma, when compared with those without, had a higher risk of developing OSA in four years (relative risk [RR] = 1.39; 95% CI: 1.06-1.82; p = 0.03) BACKGROUND